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Police say an 18-year-old attending summer classes at the University of Cincinnati was struck by a campus officer's stun gun and died of cardiac arrest.

Officers received a 911 call about an assault at Turner Hall early Saturday. The university's assistant police chief, Jeff Corcoran, tells The Cincinnati Enquirer that the teenage boy approached officers in the dorm hallway, appearing agitated and angry.

Corcoran says officers ordered the teen to back off, but he refused. He was then hit once by an officer's stun gun.

Afterward, the teen appeared incoherent. He went into cardiac arrest after paramedics arrived and was pronounced dead at University Hospital.

The department has suspended the use of stun guns until his cause of death is determined. Authorities are also investigating the original 911 call.