Police have arrested a man in connection with the shooting of five Duquesne basketball players early Sunday at a campus dance and are seeking a second man.

Brandon Baynes, 19, of Penn Hills has been identified as the man arrested overnight. He will be arraigned on charges of aggravated assault, reckless endangerment, criminal conspiracy, and illegally carrying a firearm.

Police are also seeking William Holmes, 18, of Penn Hills in connection with the crime, according to Commander Thomas Stangrecki. Mr. Holmes is considered to be armed and dangerous.

Two other men are in custody, but are thought to be witnesses to the shooting.

Brittany Jones ... from her MySpace.com profile.

Brittany Jones, 19, of Penn Hills, who is said to be an associate of the suspect, was arrested last night. She was charged with reckless endangerment, carrying a firearm without a license and criminal conspiracy, according to her attorney, James M. Ecker. She was arraigned at 6:30 a.m. and was released from Allegheny County Jail earlier today. Ms. Jones is a sophomore Psychology major at Duquesne University, and she is a member of the Black Student Union, sponsor of the dance.

This morning, Mr. Ecker told media members waiting outside the jail for Ms. Jones' release that she was already gone. Standing with Ms. Jones' parents, he said her $200 bail, which is 10 percent of her $2,000 bond, had been paid and she had escaped from the media glare "because there is still a very dangerous person out there and I don't want her picture on TV."

Mr. Ecker didn't refer to Mr. Holmes by name but the inference was apparent, because Mr. Baynes was already in custody.

Told by a reporter that, according to the affidavit, Ms. Jones was known to the shooters, Mr. Ecker said he was concerned for her safety from several fronts.

"There are other people out there. This is a very serious case. The whole basketball team was shot. I don't know that that has ever happened before in the United States. This is a worldwide case.

"There are a lot of crazy people out there, not just the shooter. I don't want my client's picture out there and neither do the authorities."

According to the affidavit of probable cause filed in the case, Ms. Jones got a call from a friend named Kenny Eason the night of the dance. He asked if he could come to the event. Mr. Eason arrived on campus with several friends and his brother, Jeremiah Eason. As the group was walking toward the Duquesne Union where the dance was being held, Kenny Eason asked Ms. Jones if they would be frisked at the door. She went ahead of the group and asked the doorman whether those attending were being checked for weapons, and was told they would not be. Ms. Jones noticed that Mr. Eason and several of his friends were carrying guns, according to the affidavit. William "Little Bill" Holmes is identified as the person with whom she conspired to smuggle weapons into the party.

After the party ended at 2 a.m., Ms. Jones was walking toward the Towers dormitory and heard arguing. She ran toward the sound of voices and saw one of the men in the group that had accompanied her to the party shooting toward several men. Ms. Jones' statement in the affidavit did not identify the shooter. Afterward, she saw several men lying on the ground bleeding.

The affidavit does not contain information about what happened at the party that might have sparked the confrontation.

This morning District Attorney Stephen A. Zappala Jr. and Police Chief Dom Costa went to the Duquesne campus to tour the shooting scene.

"We can't find anything to make sense of this incident," Mr. Zappala said outside the university's Victory Hall.

Investigators found shell casings from two different weapons at the scene of the shootings and more than a block away from the scene, Mr. Zappala said. The casings matched the slugs that were removed from the victims, confirming that there were two weapons used, he said. Chief Costa said the city police and the university are working together on the investigation.

Together, Chief Costa said, investigators "have been able to bring the case to a semi resolution at this point.

"We wanted to ease the apprehension of the student body," he continued. "They're happy to hear that we're making arrests."