Sep 7, 2013 1 min read

PITTSBURGH (AP) – A bomb threat closed a bustling Pittsburgh-area shopping center for more than an hour.

Authorities are fingerprinting a note recovered Saturday in the Mall at Robinson, and looking through mall video footage.

Robinson police Sgt. Frank Marko tells the Pittsburgh Tribune-Review that a customer found the handwritten note in the men’s restroom near a food court about 11 a.m.

Allegheny County Police officers and bomb-sniffing dogs worked their way through the mall and found nothing. Shoppers were allowed to return at 12:38 p.m.