Gunfire near Tenn. nuclear plant

POSTED: 8:52 PM Apr 21 2013   UPDATED: 4:15 PM Apr 22 2013

A security officer patrolling the area outside a nuclear power plant in east Tennessee exchanged gunfire with a person early Sunday morning.

A statement from the Nuclear Regulatory Commission says the incident occurred more than a quarter-mile from the Watts Bar nuclear plant's protected area.

The Tennessee Valley Authority operates the plant. It notified the NRC that the shooting occurred near the Tennessee River just before 2 a.m. TVA is investigating the incident.

The nuclear commission has declared it an unusual event, which is the lowest category of its four emergency classifications.

The officer was not injured and local police are helping with the response to the incident.

The Watts Bar plant is located near Spring City, about 60 miles southwest of Knoxville.