ORRINGTON – Law enforcement officials say a man was shot to death by officers during a standoff at his home in Orrington.

Police say three members of the Maine State Police tactical team were involved in an exchange of gunfire that killed 54-year-old Mark Ellis.

Officials say the tactical team and crisis negotiation teams responded Tuesday evening to assist the Penobscot County Sheriff’s Department following a criminal threatening and terrorizing complaint.

Police say Ellis barricaded himself in his home and had access to multiple guns. The shooting happened shortly after midnight and police confirmed Ellis was dead early Wednesday.

The three officers who discharged weapons, Sgts. Josh Haines and Peter Michaud and Trooper Dave Coflesky, are on leave during the investigation by the State Attorney General’s Office, which is standard procedure in officer-involved shootings.