9:50 PM Update
Police contacted KPCW to announce that Main Street and Park Avenue were now open. Swede Alley remains closed as a staging area for the moment.
A bomb-sniffing dog is now on the scene at Treasure Mountain Inn, as the search continues for a possible bomb, as threatened by an unknown caller to the Park City Police Department earlier this evening. KPCW's Leslie Thatcher gets the latest from Sergeant Jay Randall from the Park City Police Department.