Metal detectors didn't prevent a Virginia Tech student from being stabbed at a local night club.

Police say the student, 23-year-old Frank Amponsah, worked at the tavern and was escorting a group outside when someone came from behind him and stabbed him.

No one saw the attack.

The tavern's owner says about 200 people were inside, and all of them went through a metal detector at the door. The tavern is the only bar in Blacksburg with one installed.

We can't keep knives out of our prisons, what makes them think they can keep them out of public places?