Murder Charges Filed in Hit-and-Run Slaying : Investigation: Two men believed to have fled out of state are sought in the death of a Chatsworth teen-ager who was run down by a car.

Murder charges were filed Friday against two men who are being sought in the hit-and-run slaying of a Chatsworth teen-ager, authorities said. Investigators believe the pair fled to another state.

Los Angeles police said they believe that Alfred Paul Harrison, 19, of Chatsworth was driving a white Mustang that struck and killed Michael Duitsman, 19, in the 19700 block of Plummer Street on June 18. A passenger in the car was identified as Michael Combs, 20, of Reseda, police said.

Although Harrison is alleged to have been driving the car, the Los Angeles County district attorney’s office filed murder charges against both men. Authorities believe that the two men were involved in a dispute before the shooting and attempted to hide the Mustang afterward.

Police have issued a warrant for their arrests over a national law enforcement computer system. Investigators are attempting to find the pair through information from the men’s acquaintances and other sources.

Duitsman, son of a Los Angeles police detective, and several friends were attending a party at a house on Plummer when they heard the squealing tires of a car that was racing up and down the street about 2:30 a.m.

Several of the party-goers, who had been drinking, went out to the street, initially thinking the car belonged to a friend who had been ejected from the party, police said.

But the party-goers did not know the two passengers in the car. Police said the car made at least three passes by the party house and that obscenities were exchanged between the party-goers and the men in the car. According to police, a passenger in the car fired blanks from a starter pistol and threw a bottle at the party-goers as the car passed the house.

On the final pass by the house, police said, the car picked up speed and drove directly at Duitsman, who was standing in the first lane of the four-lane street. He was struck and killed instantly.

Police had few clues to the identity of the suspects until the Mustang was found Tuesday hidden near a dirt road in a desolate canyon above Canoga Avenue north of Chatsworth Street. The car had been partially spray-painted black and graffiti was scrawled over it. The car was also covered with a tarp and its wheels were stuck in a rut, which detectives said apparently stopped someone from rolling it completely down an embankment.

“We were lucky,” Detective Tim Moss said. “It was pretty far down a hill. A little further into the canyon and we probably would never have seen it. There was a jack underneath it and it looks like someone was trying to push it further down, but it got stuck.”

Police began looking in the canyon area after focusing their investigation on Harrison and Combs, who had recently been staying in a nearby house.

An informant had told investigators last week that the two men were hiding from police but that he did not know why, Moss said.

Investigators then learned from another tipster that Harrison had recently bought a white Mustang. When they went to the house where the men had been living, the pair had already fled. But police searched the undeveloped canyon north of the house and found the Mustang in about an hour.

The car still had front-end damage and a broken windshield that police believe were caused when the car struck Duitsman.