CHICOPEE, Mass. (WWLP) – Chicopee and State Police are investigating an unattended death after law enforcement heard a gunshot inside an apartment on Pendleton Avenue Wednesday afternoon.

Hampden District Attorney Spokesperson James Leydon told 22News an interaction occurred Wednesday between a resident of the apartment and the Sheriff’s Department. The resident ran back into his apartment and law enforcement heard a gunshot.

Members of State Police and the Chicopee Police Department are investigating an unattended death as a result of the incident. Leydon says the incident has been contained and there is no threat to the public.

Following that incident, our 22News crew could see Chicopee Police, State Police and members of the Sheriff’s Department outside the apartment complex in the area. State Police could be seen entering the building with shields, helmets and body armor equipped.

22News will continue to follow this story and update this article as soon as more information become available.