A hospital is on lockdown amid reports an gunman on the loose. Staff and visitors are reportedly hiding at Corewell Health Beaumont Troy Hospital in Michigan, USA.

It is not clear at this stage if anyone has been shot. Police were called to the area at 8am local time - 12noon GMT - to reports of a shooting. Hospital staff were reportedly bleeped and sent a message telling them an active shooter was in the "parking structure". The message read: "THIS IS AN EMERGENCY -- There is an ACTIVE SHOOTER Troy Hospital in the Parking Structure building. Police are en route. Please take immediate personal safety measure and follow the run, hide, fight guidelines. For those not currently at the facility, stay away. Do not return to the facility until the all clear has been signalled."

A nurse called the local news WXYZ and said that she'd heard the shooting began in the radiology department. Local parents were all sent a message from the area's school district which read: Good morning OneTroy, as you may know, Corewell Health/Beaumont in Troy is experiencing an emergency. We want to assure you that our schools remain safe and secure. We have taken additional security measures, and our team is closely monitoring the situation in coordination with local authorities. Schools remain in session, and our top priority is the safety and well-being of our students and staff. We will continue to keep you informed as needed. Thank you for your trust and support."

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Troy Police Department also issued a statement at around 8:07am (about 12.07pm GMT) on social media platform Xconfirming a shooting had taken place. It read: "We can confirm there has been a shooting at Corewell Health Beaumont Troy Hospital. This appears to be an isolated incident however the Suspect is not in custody. Please avoid the area." It is believed officers are searching room to room for signs of the gunman.

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