Potential active shooter reported on University of Michigan campus By Keith Griffith For Dailymail.com Published: 21:13 GMT, 16 March 2019 | Updated: 21:13 GMT, 16 March 2019 Viewcomments A possible active shooter has been reported on the University of Michigan campus. 'UM Emergency Alert - Mason Hall Run Hide Fight' the university in Ann Arbor, Michigan said in a flash bulletin to students. Emergency radio traffic indicated that callers reported hearing shots fired in the undergraduate library. There were no initial reports of anyone seeing a shooter. Developing story, check back for updates. The University of Michigan, whose student union is shown here, celebrated its 150th anniversary in 2017 Share or comment on this article: All rights reserved for this news site dailymail and under his responsibility