OAKLAND -- Four reputed Oakland gang members have been charged with murder in a birthday party gunbattle in January that left one of their accomplices dead, police said Friday.

Authorities said none of the men charged, who were arrested during a series of raids Tuesday morning, actually fired the shot that killed Jordan Chhit, 20, on Jan. 29 outside a house in the 1700 block of 20th Avenue.

But authorities said since the suspects initiated a "gunbattle" that left Chhit dead, they were all charged with murder under the provocative act doctrine because their actions resulted in the death of an accomplice.

The partygoer who shot Chhit has not been named. But that person was acting in self-defense and will not be charged, authorities said.

Those charged are Aaron Kheav, 21, Phon Mey, 29, Scott Moeun, 20, and Saun Oeurn, 29, all of Oakland. A fifth suspect, whose name has not been released, is being sought.

Authorities said Mey has prior convictions for drugs, being an accessory to a felony and illegal possession of a firearm.

Besides the murder count, the four are also each charged with three counts of attempted murder and one count of firing into an occupied dwelling.

Three people attending the party were wounded by gunfire. Two were men standing outside the house, and the other was a 28-year-old woman inside the house who was grazed in the head by a bullet that went through a window, police said.

Officer Eric Milina said the shooting stemmed from a long-standing violent rivalry between the gang the suspects belong to and a rival gang, some of whose members were attending a birthday party at the house.

Police said Chhit is an associate of the four men and knowingly went with them to the party.

Milina said the suspects opened fire first and were met with return gunfire. Chhit was hit and driven by some of the suspects to a hospital, where he later died.

Police would not say if any of those wounded were actual members of the rival gang. None of their wounds were life-threatening.

Milina said information from witnesses and other evidence allowed police to identify the four men as suspects, and probable cause arrest warrants were issued.

The four were arrested without incident by dozens of police, including SWAT teams from Oakland and other East Bay police agencies, at four raids Tuesday morning on 13th Avenue and High, Cherry and Spencer streets, where the men lived. Some guns were recovered in the raids, and police are trying to determine if any of them were used in the shooting.