The shooter who opened fire in a classroom at Virginia’s Old Dominion University on Thursday in an attack being investigated as an act of terrorism had a gun with an obliterated serial number, potentially complicating investigators’ efforts to determine how the man with a previous felony conviction obtained a firearm, according to a law enforcement official.
Investigators will have to try to re-surface the number in order to trace the gun, according to the official, who spoke to the Associated Press on condition of anonymity because they were not authorized to discuss the ongoing investigation.
