WASHINGTON — Police arrested a man in connection with the murder of an Annandale man in Falls Church.

Fairfax County police charged Santos Narcisco Osorio, 34, of Falls Church, Friday, for the murder of 23-year-old Edgar Armando Serrano.

Police said the two were at a party in the 7700 block of Camp Alger Avenue early Friday morning when a fight broke out between them. When the victim fled the home, the suspect chased after him and assaulted him in the 7600 block of Trail Run Road.

Police found the victim on the ground, unresponsive. He was pronounced dead at the scene, police said.

The Office of the Chief Medical Examiner will determine the cause of death, although according to police, a sharp instrument may have caused the victim’s injuries.