Grady Alexander Vickers, 57, of Falls Church, Virginia was stabbed and killed by Mark Shelor, 24 on Thursday, following an argument between the two at a day program near Tysons Corner.
Fairfax County Police said Vickers was stabbed in the abdomen with a sharp object by Shelor shortly after 9:30 in the morning. The incident happened near Old Meadow Road and Route 123 in McLean.
The stabbing occurred after the two men got into an argument outside of the facility of a company called PRS, Inc. According to their website, PRS (Psychiatric Rehabilitation Services) works to help individuals with mental illness, emotional and/or behavioral disorders achieve personal wellness, recovery and community integration.
Shelor stayed on the scene after the incident.
Both men are described to be schizophrenic and are part of the PRS day program. There were witnesses to the incident, police said.
Shelor is being charged with murder.