Authorities say five people were wounded in a shooting at an apartment complex in Southern California.

Pomona police Sgt. Christian Hsu says a gunman approached a crowd of people at a party in a courtyard late Saturday and opened fire. Five people were hospitalized, two in serious condition.

Hsu says the suspect, described as a man in his early 20s, ran away and was being sought by police.

A motive for the shooting was not immediately known.