Actor Mark York, who played Billy Merchant in the first and second seasons of the TV series "The Office," has died at the age of 55, TMZ reports.
The actor died at an Ohio hospital. The exact cause of death is yet unknown.
Mark York has had lower extremity paralysis since 1988. He was in a wheelchair.
In addition to "The Office," the actor starred in the series "CSI: New York" and "Fighting Words."