Casey Emmer. (Courtesy of Fairfax County police.)

Officers discovered the body of Emmer, 62, after a report of a break-in and a stabbing in the 1200 block of Colvin Meadows Lane, according to police.

Casey Emmer, 25, who lives at the same address, was arrested and charged with murder, police said.

Lawrence Emmer had trauma to his upper body, police said.

This was the county’s sixth homicide of 2011.