They immediately began CPR while awaiting the arrival of Fairfax County Fire and Rescue.
The victim, 29-year-old Mario Cedillo-Santiago, was transported to Inova Fairfax Hospital and was pronounced dead around 9 p.m. Saturday.
Homicide detectives and Crime Scene technicians responded to the scene. The initial investigation determined that roommates at the Cool Oak Lane address heard an argument between the victim and an unidentified person. When they went to investigate, the assailant had fled and the victim was discovered.
Anyone with information about this incident is asked to contact Crime Solvers. Tipsters may submit a tip electronically by visiting fairfaxcrimesolvers.org or text a tip by texting TIP187 plus your message to CRIMES(274637)** or by calling 1-866-411-TIPS(8477). You may also call the Fairfax County Police Department at (703) 691-2131.





