Authorities were reporting multiple victims in an “active shooter” attack in the area of Mercy Hospital on the Near South Side that brought out a large police presence Monday afternoon. Emergency crews were called to near the hospital, 2525 S. Michigan Ave., about 3:20 p.m. There were “reports of multiple victims” in the attack, police spokesman Anthony Guglielmi said in a tweet. Fire officials called an emergency medical services Plan II, sending at least 10 ambulances to the scene, because of an “active shooter” situation, a Fire Department spokesman said. A hospital employee said she was in her office when...