RIVERVIEW — A morning fire Tuesday heavily damaged Mulligan's Pub at Big Bend Road and Summerfield Boulevard. Multiple 911 calls about 9 a.m. reported the fire, which produced heavy black smoke. Firefighters called a second alarm because the pub was in a strip mall, though the fire was ultimately contained to Mulligan's. The cause of the fire, which started in the kitchen, was being investigated. No injuries were reported.