PORTLAND, Ore. -- A man who was the target of a FBI search warrant killed himself with a single shot to the head, police said Thursday.

The FBI and Portland police officers were serving a search warrant in the 12600 block of Southeast Holgate Boulevard just before 6 a.m. While clearing an outbuilding on the property, officers encountered Derek Coady, 43, who they said was armed with a gun.

Police tried to get Coady to put down the weapon, but he started to duck behind the front of a parked vehicle, according to officers. Police said the position would have given him a vantage point to possibly shoot at officers.

An officer fired at least one round from his gun and a short time later, officers heard a gunshot from the area where Coady was hiding.

A Special Emergency Response Team was activated and they later found Coady dead from a self-inflicted gunshot to the head.

I never in a million years would have imagined that our neighborhood would come to this. I'm speechless really," a neighbor named Christian said.

Homicide detectives and the Multnomah County Major Crimes Team have started an investigation in the shooting. Investigators said they haven't figured out whether Coady was struck by a bullet or a bullet fragment fired by a Portland officer. An autopsy is expected to confirm the exact cause of death.

The federal arrest and search warrant was one of a series served in the Portland metro area Thursday. Because of the nature of the investigation, a federal judge sealed most of the information in the case.

Police: Man Shot Himself During FBI Search Warrant