Officer Kills Motorist After Freeway Chase : Homicide: Man allegedly hit a policeman with his car at an Anaheim mobile home park early Saturday. Shooting remains under investigation.

A police officer shot and killed a 25-year-old man early Saturday morning after the suspect allegedly hit him with his car in a mobile home park after a high-speed freeway chase, authorities said.

Gary Boomer of Anaheim was pronounced dead by paramedics shortly after the 1:15 a.m. shooting near his home in the Friendly Village mobile home park, according to a written statement from the Anaheim Police Department’s homicide detail. Police said the shooting was under investigation and refused to comment further.

Police said the 15-minute chase began about 1 a.m. According to Linda Boomer, the dead man’s mother, Boomer’s girlfriend apparently telephoned the Orange County Sheriff’s Department and Anaheim police, saying Boomer was harassing her and had driven away. Gary Boomer, who was wanted by police on a felony assault warrant, led officers on a wild chase through the city of Anaheim and onto the eastbound Riverside Freeway, reaching speeds in excess of 90 miles per hour before he exited at Imperial Highway, according to the statement, issued by Sgt. Steve Rodig of the department’s robbery-homicide detail.

Police, who had been alerted by Gary Boomer’s girlfriend that he would probably be headed to the mobile home park, were waiting for him when he arrived at Friendly Village, said Linda Boomer, who also lives at the park.

Gary Boomer drove into the park but failed to stop before jumping a curb near the park entrance several blocks from his home and hitting a uniformed officer with the car, according to the statement. The unidentified officer, who was not seriously hurt, was treated and released at a local hospital, Rodig said.

Witnesses said they heard police yell “Stop or I’ll shoot!” and then the sound of two gunshots.

“I heard somebody yelling and then I heard the shooting,” said a woman who declined to identify herself but said she an Ohio resident visiting a relative in the park. “I had just put my head down to go to sleep when I heard the yelling and the ‘boom, boom! ‘ I went outside and there were policemen all over creation, still holding their guns. Everything happened very quickly.”

The police statement said that the officer “discharged his duty weapon during the assault, and struck suspect Boomer.” But after the shooting, witnesses said they saw Boomer’s body lying on the ground outside his car.

The Orange County district attorney’s office will investigate the death, a routine procedure in all officer-involved shootings.

A tearful Linda Boomer said her son had been unemployed for some time and had troubles with his girlfriend, but she questioned the reason for the shooting.

“It’s hard to believe this has even happened,” said Boomer, 49, a factory worker, as she sat at her dining room table and was comforted by her daughter and friends. “I guess he hit an officer. Maybe that gives them the right to shoot somebody, but I don’t know.”

Boomer said her son had been in trouble with police for evading an officer after an automobile accident. She said he had recently failed to report to his probation officer and could only guess that is why a warrant had been issued for his arrest. It was not clear Saturday why Gary Boomer was on probation.

Gary Boomer had attended Anaheim’s Savanna High School briefly but had dropped out before graduating, his mother said. He was living with her and his 26th birthday would have been May 24, she said.

Gary Boomer was driving his mother’s car during the chase and had called her earlier in the evening to tell her he would return it.

“He called and said, ‘Don’t worry, Mom, there’s nothing wrong with your car, you’ll get it back,’ ” said Linda Boomer, a divorced mother of three children. Her son’s girlfriend also called twice to say he was there with her car, Linda Boomer said.

Boomer said she heard police helicopters hovering over the park but didn’t know her son had been killed until police arrived at the mobile home she also shares with her daughter, Kim Lombard, about 9 a.m.

Lombard also questioned the reason for the shooting.

“I don’t know. Maybe if you have a warrant, that gives them the right to shoot you,” Lombard said. “It doesn’t seem right.”

Several residents of the 349 large mobile homes in the sprawling park at 5815 E. La Palma Ave. heard the early morning commotion. Brandi Curtis, 16, said she had just gotten home and received a phone call from a friend that someone in her neighborhood had been shot.

“I walked over and saw the car and a man lying on the ground in handcuffs,” she said.

Bill Nicoll, 58, who has lived at the park for 20 years, said that when he left home to take his morning walk about 8 a.m., police were still at the scene, which was cordoned off. Gary Boomer was still lying on the ground and his mother’s car was still astride the curb with its front wheels on the grass, Nicoll said.

“I couldn’t believe he was still there,” said Nicoll, who had seen a television newscast of the shooting. “It didn’t seem right that they would let somebody lie there like that so long.”

Times staff writer Lynn Franey contributed to this report.