CONCORD, N.C. -- Police in Concord have yet to identify any suspects after a fatal shooting over the weekend that happened in front on nearly 100 people.

Keyarre Miller, 20, died, and three others were shot.

Police said they've spent the last few days interviewing dozens of witnesses and have developed "persons of interest." But they have yet to name any suspects.

"We do one interview, they may give us a couple of names," Capt. Gary Hatley of the Concord Police Department said. "So we try to interview those folks and see what they saw, and it's just going from one to another right now."

Miller's girlfriend, Echo Price, was also shot. She was upgraded to good condition at Carolinas Medical Center on Monday.