The teens hit the floor and ducked for cover as the bullets started flying through the walls and windows of the Ypsilanti Township mobile home.

By the time the gunfire died late Sunday night, a 14-year-old girl and a 17-year-old boy were dead and two other teens were wounded, the Washtenaw County Sheriff's Department says. At least 20 bullet holes were visible on the outside of the mobile home this morning.

The owner of the home in Greenbriar Estates told The Ann Arbor News that he believes the shooting may be linked to an earlier confrontation he had with a woman and a group of men with her. Authorities say they are investigating whether there is a link between that dispute and the shooting four hours later, but no arrests have been made.

Killed in the gunfire were Krilissa Feldman and Scott Bonar, both of Ypsilanti Township. Two other teens - 19-year-old Joseph Tibbs and 17-year-old Chad Yates - were treated for non-life-threatening gunshot wounds.

Sheriff's Cmdr. Dave Egeler said this morning that the mobile home was clearly the target of the shooting. He described it as "drive-by'' style, but said he did not know whether the shooter or shooters were in a car or on foot.

Clint Ousley, who owns the mobile home at 104 Wildwood, said he was inside the residence with eight or nine friends Sunday evening when the woman showed up with several men.

Ousley said the men - armed with bats and crowbars - put a board through the window of his mobile home and then threw a crowbar at him. He said he threw it back, breaking the window of their vehicle.

Four hours later, Ousley said he heard several pops. He didn't realize what was happening until others began hitting the floor.

"I don't know who pulled the trigger, but I know who's behind it,'' Ousley said.

The group of friends and neighbors were in the living room of the mobile home, which Ousley purchased four months ago, when the shooting began. Egeler said at least one of the victims ran from the back of the mobile home to escape the gunfire.

Feldman died in the arms of her boyfriend, Matt Craiger, who had a bullet hole through his shirt but was not struck.

Bonar was struck in the chest, and sat clutching his chest as he bled and friends told him to lie down, Ousley said. He was taken to St. Joseph Mercy Hospital, where he died.

Tibbs and Yates were shot in the backside as they were fleeing, Ousley said.

Egeler said police are following credible leads. He said police are still trying to determine how many bullets were fired.

"We're still trying to interview all of the people who were present to get their statements,'' Egeler said. "We're vigilantly searching for the suspects responsible for this brutal crime.''

No one reported seeing a vehicle leaving the scene. Several people called 911 around 11:20 p.m. to report the gunfire, Egeler said.

Feldman, who attended Willow Run Middle School and was later home schooled, would have celebrated her 15th birthday Wednesday, said Lee Mayzes, Matt Craiger's mother. She said Feldman, who lived on Dakota Avenue, had many best friends and loved babies.

"She was a good kid,'' Mayzes said. "She was nice. She loved little babies. My granddaughter adored her. This is heart-wrenching for everyone.''

The couple had been together for two years, and Matt's father, Mike Craiger, said whoever shot Feldman took Matt's life away when his girlfriend was killed.

Cheryl Jordan, Bonar's aunt, said he was a Willow Run student but had stopped attending classes. She said she encouraged him to return to school.

"He was a good kid. He wasn't involved in anything bad,'' Jordan said. "He didn't go to school like he should, but he wasn't into drugs and games. I wish kids could stay home at night, not be out after 10 p.m.''

Jordan said Bonar enjoyed spending time on his computer and had a MySpace page. She said he liked hanging out with friends and was growing into a young man.

On his MySpace page, friends already left several messages for Bonar this morning, describing him as a brother and friend and telling him to rest in peace.

"A lot of people liked Scotty and had high expectations for him. I think he was just in the wrong place,'' Jordan said. "He had his whole life in front of him and someone snuffed it out and took his life from him.''

The Michigan State Police crime laboratory was called in to help search for evidence at the scene. Egeler asked that anyone who has information about the shooting call the sheriff's tip line at 734-973-7711.