Gunman on the run after campus shooting.
At least two people are dead after a gunman opened fire during a police traffic stop on the Virginia Tech campus Thursday.
The police officer involved in the shooting was killed.
Another body was found in a nearby parking lot.
Investigators now believe the second fatality was the man who fired on the police officer, but are still working to confirm that.
The campus was placed on lockdown after the shooting, a grim reminder of the 2007 massacre there that left 33 people dead.