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.
Building Senior Living for the Next Generation of Retirees
Managing Drain and Biofilm Risk
Froedtert Hospital Blue Parking Facility IPMI Earns Award for Excellence
The Role of Positive Distraction in Pediatric Design
Healthcare Waste is Fueling America's Debt