Some 100 people were inside the Red Square nightclub at 20001 Ventura Blvd. on Nov. 24 when the fight broke out between a group of Latinos who were celebrating a Latin-themed night and a group made up mostly of Armenians who were celebrating a birthday, said Los Angeles Police Detective Joel Price.

An unidentified Armenian man accidentally broke a Latino man's necklace doing a dance move, sparking the fight. Security guards escorted the brawlers outside where more fights broke out, Price said.

At one point, Sidney S. Singleton, 19, and Dimitri Hermozshamoun, 19-year-old friends from Glendale, confronted Marco Antonio Herrera, exchanged words with him, then struck him, knocking him down, before stomping and kicking him, police said. Herrera died at Northridge Hospital Medical Center three days later from major head trauma.

In a twist, Hermozshamoun and Singleton, returned Dec. 29 to the club not knowing Herrera had died. Someone recognized them and called police, Price said. Police recognized Singleton's face from a surveillance image taken from a nearby gas station where the suspects went after the attack, Price said. The men were arrested without incident and were being held on murder charges at the Los Angeles County Jail, police said.

The suspects admitted involvement in the fight, telling police they felt outnumbered and threatened, Price said.

It did not appear that Herrera was involved in the fight inside that sparked the fracas out front, police said. Police were seeking to question the men involved in the initial fight.

At the time of his arrest, Hermozshamoun was on probation stemming from grand theft conviction from March 2007, according to Los Angeles Superior Court Records online. Singleton has an arrest for a marijuana possession charge that was dismissed in October 2007, records show.