HERKIMER, N.Y. (AP) — Authorities say the suspect in the fatal shooting of four men in neighboring upstate New York villages was holed up in a small, cluttered room in an abandoned bar when he died in a shootout with police SWAT teams.

State police Superintendent Joseph D’Amico says 64-year-old Kurt Myers fired through a first-floor door after troopers and FBI agents entered around 8 a.m. Thursday, killing an FBI dog sent into the room.

D’Amico says police returned fire, killing Myers.

His death ended a nearly 19-hour standoff that began after police say he killed four men and wounded two others at a barber shop in Mohawk and a car care business in Herkimer.

D’Amico says police still don’t know why Myers went on the shooting rampage.