The unnamed patient was wounded at Corewell Health Beaumont Troy, located 24 miles north of Detroit, at around 7 a.m. ET on Thursday. It remains unclear whether the patient was specifically targeted or caught in a random attack, and no further details about their condition have been made public.

The shooter is still at large, and a heavy police presence is at the hospital as law enforcement works to locate the suspect.

Barbara, a nurse at the hospital, informed WXYZ that the gunfire reportedly started in the radiology department. A shelter-in-place order has been issued for the hospital, and medical staff are reportedly taking refuge in the supply room, according to 7News Detroit.

A warning sent to hospital staff read, “THIS IS AN EMERGENCY — There is an ACTIVE SHOOTER at Troy Hospital in the Parking Structure building,” as reported by Click on Detroit. “Police are enroute. Please take immediate personal safety measures and follow the run, hide, fight guidelines.” Read more below