Pa. police kill man who threatened officers

Police shot dead a man outside Philadelphia on Tuesday when he tried to run over officers attempting to arrest him for posting YouTube threats against law enforcement, authorities said.

The unidentified 52-year-old was wanted for terroristic threats. He was killed about 4:30 p.m. in Drexel Hill, Delaware County, when he accelerated back into the SUV of the Clifton Heights, Pa., police chief and then tried to run over other officers, said Upper Darby Police Superintendent Michael Chitwood. Police from three departments had followed him from his home in Clifton Heights after obtaining an arrest warrant.

Five officers opened fire on the suspect, who is white.

"The officers were in fear of their lives and did what they had to do," Chitwood said at a news conference. No officers were hurt.

Chitwood said the suspect had "threatened to kill police, threatened to kill FBI agents" in the video.

The confrontation came 10 days after a black man assassinated New York Police Department Officers Rafael Ramos and Wenjian Liu in their patrol car and killed himself after fleeing.

The gunman, Ismaaiyl Brinsley, had vowed retaliation against white officers for the police killings of two unarmed black men, Michael Brown, in Ferguson, Mo., and Eric Garner, on Staten Island.