RED WING, Minnesota (WXOW) -- A security alert is being investigated at the Prairie Island nuclear plant near Red Wing.
Plant officials said a piece of security equipment at the plant failed Wednesday afternoon about 2:15 p.m. The event lasted until approximately 6 p.m.
Xcel Energy, which owns the Prairie Island nuclear plant, said no radioactive material was released during an incident Wednesday.
The company states there is no danger to the public.
However, Xcel Energy is investigating what it calls an "unusual event."
The equipment has been restored and plant officials are investigating the cause of the failure.
Xcel Energy said the plant maintained security during the event and it has notified federal, state and local officials.
The alert is the lowest level of four possible emergency notifications
Xcel released a statement that said, "The declaration indicates a potential reduction in the level of safety at the plant, but no threat to public safety. The declaration's purpose is to have the plant's operating staff reach a state of readiness for emergency response if necessary."
Unit 2 at Prairie Island continues to operate at full power.
Unit 1 remains offline as part of a scheduled refueling outage.
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