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.
Making the Energy Efficiency Case to the C-Suite
How to Avoid HAIs This Flu Season
Design Phase Set to Begin for Hospital Annex at SUNY Upstate Medical
Building Hospital Resilience in an Era of Extreme Weather
Ennoble Care Falls Victim to Data Breach