HADDON HEIGHTS, N.J. (AP) _ A gunman shot three officers, killing at least one of them, when they tried to arrest him Thursday and search a house for weapons, authorities said.

Cpl. Ralph Trovato of the Audubon police, one of many area police forces on the scene, said that all three officers were dead.

But Assistant Prosecutor Joseph Audino of Camden County said only one officer was killed, another was hospitalized, and the third was still in the house, his condition unknown.

The accounts could not immediately be reconciled.

Authorities were talking by phone to the gunman, who lives in the house in this Philadelphia suburb, said Camden County Undersheriff Tom Gallagher.

Dozens of police from 27 departments along with sheriff's officers and state police surrounded the house.

Gallagher said the three officers _ two local police and one from the county prosecutor's office _ were serving an arrest warrant and had a warrant to search the house for weapons.

Albert Boyne was walking through the middle-class neighborhood when the gun battle erupted.

``It sounded like a war was starting. It was unbelievable,'' Boyne said.

``I heard at least 100 shots. I counted them,'' said neighborhood resident Elaine Garrity.