Fairfax County police are investigating the suspicious death of a 21-year-old man in Centreville. (Courtesy of Fairfax County police)

A 21-year-old man who was found dead Sunday in a Centreville home died from a stab wound to the chest, a Virginia medical examiner said Monday.

Fairfax County police said Hosung Lee was found unresponsive in a townhouse in the 5600 block of Gresham Lane after a relative summoned officers shortly before 4:30 p.m. Sunday. Lee was pronounced dead at the scene.

Police had called the death “suspicious” but upgraded it to a homicide Monday. Police released no other details about the circumstances of his death, and family members could not immediately be reached for comment.

Anyone with information is asked to call police at 703-691-2131.