Milwaukee police are still interviewing witnesses to a shooting this weekend that killed four people.

Lieutenant William Jessup says police have not identified a suspect yet in the shooting that happened early Friday morning.

He says they are sending evidence to the state's crime lab and hope to figure out soon if there was more than one person firing in the crowd

But he says people have come forward in person and anonymously to help them.

Police say more than 100 people were on the street when shots were fired, some possibly from a party.

Two other people were also injured in the incident.