More than 50 Redlands Police officers and detectives are on the case.
There were increased patrols in the neighborhood Friday because of the fear of further violence.
Both of the murder victims were black. The shooting suspect depicted in a composite suspect sketch is Hispanic.
But was the attack racially motivated? Police don't think so.
"Anytime you have a situation where blacks are killed by a Hispanic, there's going to be racial undertones, but do we think this was racially motivated? I really don't think that's the case," said Redlands Police Spokesman Carl Baker.
Video posted on Quinn McCaleb's Myspace page shows a person thought to be McCaleb beating up another teenager. Redlands Police are looking into it, although it may have nothing to do with the shooting.
"We've spoken to the kid who's allegedly in the video. That's not our prime focus of the investigation right now, but we're certainly aware of it, we're certainly investigating it," said Baker.
A prayer vigil was planned for Tuesday at 4 p.m. at the scene of the shooting.
Anyone with information related to the incident was urged to call the Redlands Police Department at (909) 798-7681.