The carbon monoxide detectors inside the Butler home where three people died and two others were hospitalized were disabled, police said.

BUTLER, Pa. — Police have identified the three people found dead in a home in Butler City on Tuesday. Officers said they were called to 109 College Street in Butler City for reports of a dead person. They found that person and two other people dead from suspected carbon monoxide poisoning. Two other people were taken to a hospital from the scene.

Authorities believe carbon monoxide poisoning caused the deaths of three people found in a western Pennsylvania home this week, but investigators have yet to determine what led to the deadly exposure.

Three people were found dead in a home in Butler County due to suspected carbon monoxide poisoning, authorities said. First responders were called to a home on College Street in Butler at around 5 p.m.

One man is dead and another hospitalized in critical condition after they were found unresponsive last week in an Almont Township pole barn, police said. An autopsy revealed carbon monoxide poisoning was the cause of the death,