Firefighters respond to blaze at West Mifflin Buffalo Wild Wings.

Firefighters battled a blaze at a Buffalo Wild Wings in West Mifflin early Monday morning, causing significant damage to the building. The Mount Pleasant Area School District operated on a two-hour delay schedule after a bomb threat was received through the Safe2Say program. The National Weather Service issued a freeze watch for the region from midnight Monday through 8 a.m. Tuesday. Pittsburgh Regional Transit is launching a $13.5 million project to replace nine escalators in three Downtown rail stations. The Trooper Kenton Iwaniec Memorial Foundation donated a portable breath test to a Lower Burrell police officer to reduce impaired driving.