By ADAM BEAM and BRIAN MELLEY
SACRAMENTO, Calif. (AP) — Police believe at least five shooters were involved in the mass shooting in downtown Sacramento last weekend and that it was gang-related violence. The Sacramento police department says there was a gunfight between at least two groups of men. Six people were killed in the bloodshed and 12 were wounded. The injured include two brothers who have been taken into custody in connection with the massacre. No one has been charged with homicide yet. At least two people remain hospitalized with gunshot wounds. Authorities credit evidence and tips provided by the public for their break in the investigation.