HUNTINGTON BEACH (CBSLA) — Police say the tsunami alerts and siren that went off in the early morning hours Friday in Huntington Beach were a false alarm, and officials are working to figure out how and why that happened.

At about 4:20 a.m., the tsunami alerts and sirens were activated in Huntington Beach, but fire officials were quick to reassure residents that there was no current threat to the community.

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Huntington Beach police spokeswoman Angela Bennett later told CBS2 that a system error caused the false alarm. The alarm was scheduled to go off as a test at 12 p.m. Friday. Officials are unsure why the alarm went off at 4:20 a.m. instead.

The system is being taken offline and will not go off at noon Friday while officials work to determine what caused the false alarm.

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Many residents posted to social media about being jolted from their beds.

 

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Residents were urged to sign up for ALERT OC, which is Orange County’s mass wireless emergency notification system.