Prosecutors today charged a 21-year-old man with second-degree murder in the slaying of a 35-year-old man who was gunned down early Saturday in Chinatown.

Iosefa Pasene was being held on $1 million bail.

Pasene was arrested on suspicion of second-degree murder at 6:10 p.m. yesterday at the main police station on Beretania Street, where he was being held in an unrelated incident after being arrested by the federal Drug Enforcement Administration.

Pasene has no local address and may be from the San Francisco area, police said.

The victim, Joseph Peneueta of Honolulu, was shot a little past 4:10 a.m. Saturday near the corner of Pauahi and River streets in downtown Honolulu.

Police have said Peneueta was shot multiple times by two suspects, who used a shotgun and an assault rifle.

The two fled in a white sedan, which was driven by a third man, police said.