A Chartiers City man yesterday was ordered to stand trial for the May 22 fatal shooting of a pregnant college student on the North Side.

Lamon Street, 18, maintained a calm expression as he stared at a witness who testified that he saw the suspect firing into a gathering on Alpine Street.

The witness, who said he was the boyfriend of the victim, Shavaughn Wallace, 18, and the father of her unborn son, said he had seen the suspect before. He knew Mr. Street only by his nickname, "M-Dot."

The 17-year-old witness and his mother now are subjects of the Police Bureau's witness security program. Police asked that his name not be released.

Ms. Wallace, a business student at Indiana University of Pennsylvania, was four months pregnant when she was killed.

She had been visiting her boyfriend, who was on house arrest in an unrelated juvenile case, when the shooting occurred.

In the days before the shooting, the 17-year-old witness said he had seen Mr. Street drive past the residence a few times glaring at him and his friends.

On the day of the shooting, a group had gathered outside the witness' house. Some were using the trunk of his car to play cards.

The witness and Ms. Wallace, who was sitting in the vehicle, were just beginning to eat hoagies that had been delivered when a half dozen shots rang out from nearby Pryor Way.

No one immediately knew where the shots were fired from, the witness said. No one ran for cover until four to six rounds had been fired.

The witness said he ordered Ms. Wallace to lie down in the vehicle for cover while everyone else ran towards the rear of his house.

As he fled, the witness said he saw the gunman emerge from the alley and continue to fire six to eight more rounds.

One of the party guests told him that Ms. Wallace had fallen to the ground. He went to check and found her bleeding from a gunshot wound of the back.

The witness, who was arrested about two weeks later on an unrelated juvenile probation violation as he was about to attend a prom, said that he did not offer information to police during the initial investigation.

"I was going to take matters into my own hands," he testified.

He said his mother and Ms. Wallace's mother persuaded him not to retaliate.

In an unusual move at a preliminary hearing, defense attorney Wendy Williams presented witnesses. One of them, Dominique Benton, testified that Mr. Street is her boyfriend and that he was with her all day May 22 at her Mount Oliver residence.

Although Mr. Street's last known address is in Chartiers City, Ms. Benton said he was living with her and that they never left her residence that day.

Under cross-examination by Assistant District Attorney Lisa Pellegrini, Ms. Benton admitted that she also was an alibi witness for a suspect in an unrelated homicide case. She had told police the suspect in that case, Orlando Hamilton, also was her boyfriend.

District Judge Ross Cioppa ordered Mr. Street held for trial on charges of homicide, killing an unborn child, reckless endangerment and a weapons violation.

Judge Cioppa, on the request of Ms. Pellegrini, also ordered the friends and relatives of victims and the suspect refrain from any type of contact with each other.