Police were called to Ascension St. John Hospital on Detroit's east side because of threatening calls, according to the WWJ News Radio website.
Detroit police say a psychiatric patient at the hospital wanted to get out, so they called police with what was determined to be a bogus shooting threat, and then a fake bomb threat.
There were no reports of any injuries or shots fired.
After a brief lockdown, a spokesperson for Ascension said the hospital is back open. The investigation is ongoing.
Fire Protection in Healthcare: Why Active and Passive Systems Must Work as One
Cleveland Clinic Hits Key Milestones for Palm Beach County Expansion
Emanuel Medical Center Caught Up in Data Breach
Assisted Living Facility Violated Safety Standards: OSHA
McCarthy Completes Construction of Citizens Health Hospital in Kansas