A Ridgefield woman faces attempted murder charges after she allegedly tried to poison her former partner.
Kristen Hogan, 33, was taken into custody by the Western District Major Crime detectives at Troop A at 11 a.m. Friday on an active arrest warrant and charged with two counts of criminal attempt at murder and one count of interfering with an officer, according to the Connecticut State Police.
Detectives from Western District Major Crime took over an investigation into an alleged attempted murder previously investigated by the Ridgefield Police Department on Sept. 5. State police investigators learned that a 34-year-old Ridgefield man was brought to an area hospital in early August. During his stay, a blood test allegedly revealed the man had ethylene glycol in his system, which is a poisonous ingredient that can be found in antifreeze and other household products.
Investigators met with the man on Sept. 12, according to the warrant affidavit for Hogan’s arrest. He told investigators that, on Aug. 5, he had family over for dinner. He said his stepmother brought an unopened bottle of wine which he and his family drank. He said that the remaining wine in the bottle was corked and placed in the refrigerator at the end of the night, the warrant affidavit said.
The man said on Aug. 7 he was scheduled to appear at Danbury Superior Court in response to a complaint filed by Hogan, his former partner. The man said that Hogan was suppose to appear in court but never did. He claimed that he received a notification on his phone that Hogan’s cell phone was uploading data to the wi-fi router at his residence while he was waiting at court for her arrival. The man said when he returned home, Hogan was not at the residence, according to the warrant affidavit.
The man told investigators on Aug. 10 he drank a small amount of the remaining wine. After drinking the wine, he said he went to bed. The man claimed that he woke up multiple times during the night and became increasingly ill. Around 6 a.m., he said woke up vomiting and called his father for advice. He said his father told him to call his mother who lives in the area, the warrant affidavit said.
The man claimed that his mother arrived and found him slurring his words, staggering and vomiting, so she brought him to the hospital. According to the man, the doctors initially believed he was experiencing a stroke, but after some time it was determined that a stroke was not causing his symptoms.
The man told investigators that the doctors believed he was exhibiting signs of an ethylene glycol poisoning.
According to the warrant affidavit, he said he was placed on dialysis and transferred to the intensive care unit.
The man said doctors asked him what he ingested before arriving at the hospital. He said he told them he ate previously unopened food and the wine.
Ridgefield police detectives seized the wine from his home as evidence and submitted it the Connecticut Forensic Laboratory for testing, the warrant affidavit said.
The man told investigators none of his family members who drank the wine became ill on Aug. 5. He said Hogan has unrestricted access to the home.
He believed that a motive for him being allegedly poisoned is the fact that Hogan thought she would become the full owner of the residence and would gain full custody of their child, according to the warrant affidavit. He said he believed the ethylene glycol was put into the wine while he was not at the residence.
The man said after he was released from the hospital, he was in fear of his life and installed interior cameras at the residence and let Hogan know, the warrant affidavit said. He claimed that Hogan did not want interior cameras installed and was irate. He said on Sept. 5, Hogan arrived at the residence and allegedly placed electrical tape over the camera lenses. He alleged that she then left the residence and placed a piece of tape over the exterior ring camera at the front door, according to the warrant affidavit.
The man told investigators when he arrived home he inspected the interior of the residence, including his food and drinks. The man claimed that he noticed that sugar that he put in a bowl a day prior was now hard. He said he believed the sugar was tampered with and contacted Ridgefield police. Ridgefield police seized the sugar and the bowl as evidence, then transferred the sugar bowl to Major Crimes, the warrant affidavit said.
The investigators submitted the sugar and bowl to the Connecticut State Forensic Laboratory for testing. Investigators received an email on Sept. 22 from the laboratory containing an initial report. The lab report stated that both the wine and the sugar bowl tested negative for the compound of ethylene glycol, which contradicted the initial claim that he was poisoned, according to the warrant affidavit.
The next day, the man gave investigators his “MyHealth” summary medical records from his hospital stay, which included doctors’ notes, lab results and other medical exams that were conducted, the warrant affidavit said.
The medical records reportedly said the man was initially suspected to be having a stroke based on his symptoms. which included slurred speech, poor concentration and vomiting. The report also said the man’s creatinine continued to increase. Due to the symptoms, the report said doctors believed it could be ethylene glycol poisoning, according to the warrant affidavit.
The report stated that doctors received a verbal confirmation of ethylene glycol detected in his blood. The man then
then went into renal failure and was placed on dialysis. In the medical records, it reportedly said a level of
seven for ethylene glycol poisoning was conveyed verbally to the doctors at approximately 2:04 p.m. and a level of four at 8:21 p.m., the warrant affidavit said.
After reviewing the medical records, investigators said the final lab results revealed that ethylene glycol was not detected in his blood. This contradicted the doctor’s notes, but investigators earned that any levels below 10 will be reported as “not detected” on an official lab report, according to the warrant affidavit.
Investigators spoke with the poison control center An investigator told poison control that the official lab results stated that ethylene glycol was not detected. Poison control explained that people who ingest ethylene glycol may metabolize the substance at different rates, the warrant affidavit said.
The man completed a consent to release medical records form for investigators. He later received the records, which he sent to investigators via email. The records showed that a level of seven was detected from the blood draw that was conducted at 2:04 p.m. and a level of four was detected from a 8:21 p.m. blood draw, according to the warrant affidavit.
Investigators received a phone call from the man on Sept. 29 who said his child was hospitalized for a serious illness on Sept. 27. He claimed that Hogan allegedly told the hospital and social workers he could be poisoning the child, the warrant affidavit said. The man told investigators that after these allegations, he was removed by hospital security and a visitation restriction was set in place, according to the warrant affidavit.
Investigators asked the man what his child was doing prior to being hospitalized. He said Hogan had brought his child to soccer practice and after practice, he picked the child and brought child to his mother’s home. On the car ride to his mother’s house, the man alleged that the child shows signs of fatigue and was not eating, the warrant affidavit said. He said he became concerned and contacted Hogan. Shortly after, the child was brought to the hospital.
Investigators went to the hospital on Sept. 29 to speak with Hogan. Hogan told investigators she has been separated from the man since May 2025. She stated that they share a child. Hogan claimed that the man may have been poisoning their child and alleged that the child only became ill when he was in the man’s care, according to the warrant affidavit.
Hogan stated she had videos on her phone showing the lethargic behavior of the child and completed a consent to search form and provided her phone for a forensic download, the warrant affidavit said.
On Tuesday, Hogan’s cell phone was forensically downloaded and returned to her, according to the warrant affidavit. While searching items on Hogan’s cloud data, investigators alleged discovered that, on July 28, searches for potassium cyanide, potassium ferrycide, citrate- cyanide, potassium thiocyanate, and monoethylene glycol were conducted, according to the warrant affidavit. There were also allegedly searches for “How much monoethylene glycol would kill you.”
Investigators also learned that she googled “penalty for not appearing for court hearing on your own motion” on Aug. 6, which lead investigators to believe she planned to not appear at court on Aug. 7. Investigators also reviewed the location history of Hogan’s phone, which revealed that it was in the area of the Ridgefield residence at 9:41 a.m. and 10:26 a.m. on Aug. 7 when she was due to appear at Danbury Superior Court, the warrant affidavit said.
Investigators also received an email from the Connecticut State Forensic Laboratory on Tuesday, which stated that further testing indicated that ethylene glycol was detected in the wine, the warrant affidavit said.
Investigations went to the hospital on Thursday to conduct a follow-up interview with Hogan. Investigators asked Hogan if the man or anyone else had access to her phones or electronic devices. She said the man may know her phone password, but said she doubts he would ever have an opportunity to access her device, according to the warrant affidavit said.
Hogan claimed that that the doctors ruled out any genetic or neurological issues that could be affecting the child and said she believed the child ingested something. She also alleged that the child only became sick when they were alone with the man, the warrant affidavit said.
Hogan was asked to clarify why she missed a court date on Aug. 7. She claimed that she was unable to attend her court date because she was with her family in Rhode Island.
Investigators then confronted about her search history, more specifically searches about mono ethylene glycol and potassium cyanide. She claimed that was confused about the chemicals and said she recognized the word cyanide from the television show “Psych,” according to the warrant affidavit.
Hogan then said she remembered that she purchased mono ethylene glycol from Amazon on July 28. She allowed investigators to take a photo of the purchase date on her phone. She reportedly said that she purchased the mono ethylene glycol to clean the carpet at her mother’s house and claimed that the ethylene glycol never left her mother’s house, the warrant affidavit said.
Investigators told Hogan they knew she was at the man’s residence on Aug. 7 based on her phone’s location. They then told Hogan that the man was hospitalized for ethylene glycol poisoning and a beverage in his home tested positive for poison, according to the warrant affidavit.
Hogan initially denied the claims and then allegedly said she never intended to kill him but just wanted to make him sick as payback for him being “mentally abusive,” the warrant affidavit said. She was asked if she measured the amount of ethylene glycol she put in his drinks and she claimed it was not much, she just poured it in, according to the warrant affidavit.
Hogan was asked if there was any other time she placed ethylene glycol into any of his beverages. Hogan allegedly said she poured the mono ethylene glycol into an ice tea bottle on a separate date, the warrant affidavit said. Hogan claimed that she did not know how much ethylene glycol she poured into the ice tea, but claimed it was a very small amount.
When ask if her child could have ingested the ethylene glycol, she adamantly denied it, according to the warrant affidavit. Hogan allegedly told investigators she was trying to make the man feel sick and then claimed it was only placed into the wine and the ice tea, the warrant affidavit said.
Investigators asked Hogan if she became concerned once she discovered the man was hospitalized with renal
failure, and she allegedly said that must have been the reason she searched “How much mono ethylene glycol would kill you,” according to the warrant affidavit.
Based on the investigation, state police applied for and were granted an arrest warrant for Hogan, who was taken into custody Friday She was held on a $1 million bond and was scheduled to appear at Danbury Superior Court.
