OAKLAND -- A reputed gang member suspected of participating in a gunfight at an East Oakland birthday party in August 2013 that left a guest and an accomplice dead has been charged with special circumstance murder and other counts, authorities said.

Another guest was also wounded and two additional accomplices are being sought, police said.

Dachaun Dupree, 23, of Oakland, is charged with two counts of murder, attempted murder and assault with a semi-automatic firearm. The special circumstances are murder during a robbery and multiple murder. He is being held without bail.

The guest killed was Pablo Armenta-Burgos, 38, of Oakland. Police said the suspected accomplice killed was Bryan Gonzalez, 19, who lived in the area of the party and was a friend of Dupree's.

Police believe Dupree and his accomplices intended to rob the partygoers and started shooting at them, resulting in return fire. Gonzalez died at the scene. Armenta-Burgos, who was robbed of a cellphone, died at a hospital. A 52-year-old man was also wounded.

Authorities are not saying yet which gunfire killed Gonzalez. But authorities said even though Dupree might not have been the person who shot Gonzalez, he can still be charged with murder because he is believed to have initiated the robbery and shooting that led to Gonzalez's death.

Dupree was arrested Dec. 11 outside his home on 88th Avenue in East Oakland by the police gang unit on suspicion of selling drugs. He was charged Dec. 17.

Sgt. Robert Rosin said Dupree was already being sought as a suspect in the shootings, which happened about 11 p.m. Aug. 16 outside a home in the 400 block of 105th Avenue, where a child's birthday party was being held.

Rosin said no children were wounded in the gunfire, but were left traumatized nonetheless.

Besides being identified by victims and witnesses as the gunman, police were also able to link Dupree to the shooting through his friendship with Gonzalez, Rosin said.

Rosin said it was extremely satisfying to file charges in the case. He said the police department "is dedicated to serving our community and solving cases. Solving a case like this and giving families closure means a lot."