Bensalem man charged in mom's carbon monoxide death

A Bensalem man is accused of killing his mother by using a portable generator to pump carbon monoxide into her apartment. 

Koustantinos Yiambilis, 30, is charged with criminal homicide, causing a catastrophe, risking a catastrophe and reckless endangerment.

Police and fire personnel responded shortly before 11:30 p.m. Monday to a report of fumes coming from a unit in the Longmeadow Apartments, located at 3060 Bristol Rd.

Koustantinos Yiambilis allegedly let investigators inside after they banged on the doors and windows.

Police said a search of the apartment turned up an unconscious 59-year-old woman lying on the bedroom floor. She was rushed to Aria Health Torresdale, where she soon died.

The woman was identified as Koustantinos Yiambilis’ mother, Karen Yiambilis, according to investigators.

Police said a preliminary investigation revealed that Koustantinos Yiambilis intentionally caused his mother’s death by running a portable generator inside the apartment.

Four neighboring units were also evacuated as a result of the fumes, and their residents were displaced for several hours until the apartments were cleared.

Koustantinos Yiambilis was hospitalized for evaluation. He was arraigned bedside on Tuesday and is being detained at the hospital without bail.

Police said he will be kept under guard until he’s released and taken to Bucks County prison. Koustantinos Yiambilis' preliminary hearing is scheduled for April 16.

Agents with the Bensalem Police Department, Bucks County District Attorney’s Office and Bensalem Fire Rescue are continuing to conduct an investigation.

Contact Alex Wigglesworth at 215-854-2305 or Follow @phila_lex on Twitter.

Contact the Breaking News Desk at 215-854-2443; Follow @phillynews on Twitter.