SAN CLEMENTE, Calif. --
Officials say a siren that went off early Tuesday morning at the San Onofre Nuclear Generating Station was a malfunction. Officials told residents not be alarmed, as there were no problems at the power plant. The incident prompted several concerned calls to Eyewitness News.
Officials were able to reset the alarm, but the cause of the malfunction has not yet been determined.
The siren is one of 52 in and around the nuclear plant designed to alert people in an emergency to turn on their radios or TVs for more news.
The Associated Press contributed to this story.