A man entered the University of Cincinnati Medical Center's emergency psychiatric services department Wednesday afternoon and began firing shots. He injured a hospital security officer before dying of a self-inflicted gunshot wound, authorities said.

Cincinnati Police Chief Eliot Isaac said later the shooter walked into the department in Avondale and started firing immediately.

A hospital security officer was shot in the shoulder and sustained "very serious" injuries, Isaac said. The officer, who was not identified, went into surgery. There was no word at press time on the officer's medical condition.

The deceased suspect had not been identified, and no motive for the suspect's actions has been given.

The security officer did not carry a weapon. No police officers fired any shots in responding to what was labeled an "active shooter" situation, Isaac said.

The violence generated concern throughout the hospital and the surrounding neighborhood. The hospital was placed on lockdown as officers worked the scene.

The Cincinnati Public Schools Education Center, which is nearby at 2651 Burnet Ave., was placed on a lockout, meaning staff could leave but no one could come in.

As events unfolded, James L. Whalen, the university's director of public safety, said in an email there was no immediate threat to campus.

Initially, it was not clear if a Cincinnati police officer had been shot. Cincinnati Police spokesman Lt. Steve Saunders said one officer had been shot but did not name the officer's department. And an investigator with the University of Cincinnati Police Department said none of its officers were involved.

Later, it was clarified the person shot was a hospital security officer.

"We'd like to thank our community for their continued support throughout this time," UC Health tweeted afterwards, also thanking the medical center's public safety team and Cincinnati police for their "prompt response and support."

Update from the scene: