Three different shooting incidents in Pomona, Calif., over the weekend have left three men dead, say police.

Officials say 45-year-old Jose Cerda was gunned down late Saturday while riding his bicycle on a Pomona street.

In another shooting, 24-year-old Isais Garcia Lopez and an 18-year-old man were shot while walking in an alley near midnight Saturday. Lopez was struck multiple times and died at the scene. The other man was rushed to a hospital where he underwent emergency surgery.

In a third shooting, which occurred early Sunday, 29-year-old Angel Bravo of Pomona was shot and killed as he was getting into his vehicle.

Police say no arrests have been made in any of the slayings. No suspect descriptions were released.