Police determine at least five people fired shots in Sacramento shooting

Three people have been arrested since the early Sunday violence unfolded but the motive is still unknown

Police have said at least five people fired weapons in a weekend shooting in Sacramento, California, that killed six people and injured a dozen others and prompted calls for lawmakers to address the scourge of gun violence in the US.

Officials said on Wednesday that while the motive was still unknown, investigators think gang violence is at the center of this tragedy" and that gangs and gang violence are inseparable from the events that drove these shootings".