A Missouri man accused of killing a police officer during a routine traffic stop on Sunday night was arrested on Tuesday after eluding the authorities in a sweeping two-day manhunt, the police said.

A Missouri state trooper caught the man, Ian McCarthy, around 7:40 p.m. after responding to a call about a person walking in the middle of a rural road near Urich, Mo. Mr. McCarthy, 39, who had been on the run after he abandoned his car near the scene of the shooting in Clinton, was taken to a hospital for evaluation, the police said. Urich is about 15 miles west of Clinton.

Officials with the Missouri State Highway Patrol were scheduled to hold a news conference late Tuesday to discuss his arrest.