Baltimore County police say a man found dead in a vehicle that crashed in Parkville had first been stabbed in a domestic altercation. Here's the statement from police on the killing and the quick arrest:

Baltimore County Police have charged Vincent Garnett Forney, 44, of the 1700-block of Forrest Avenue, 21234, with first degree murder after a stabbing on August 20. 

On August 20 at 10:30 p.m., officers responded for a motor vehicle crash in the 1700-block of Forrest Avenue, 21234.  911 callers advised that a white vehicle crashed off the roadway and into the woods.  When officers located the white 2008 Honda Accord, the driver was not breathing and had injuries that did not appear to be from the crash.  Jamari Davon Mathis, 38, of the 4000-block of Ridgecroft Road, 21206, was pronounced deceased at the scene.

Detectives determined that Jamari Mathis attempted to visit a female friend in the 1700-block of Forrest Avenue, 21234.  Vincent Forney was visiting at the same house when the victim came to the location.  There was an argument at the home, and Vincent Forney stabbed the victim. Jamari Mathis tried to drive away from the home, but crashed a short time later. 

Vincent Forney was arrested on August 21, charged with first degree murder, and is currently being held at the Baltimore County Detention Center without bail.