Did you hear an explosion on the Monterey Peninsula? Here is what it was.

By Ricardo Tovar

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    MONTEREY, California (KSBW) — People across the Monterey Peninsula reported hearing a loud explosion Sunday night.

Monterey police say a phosphorus-based marine rescue device was detonated at about 9:38 p.m. at Monterey State Beach. The device was located roughly 300 yards north of 125 Surf Way.

California State Parks contacted the Monterey County Bomb Squad, which referred them to the Santa Clara County Bomb Squad.

Navy police helped close the beach until the Santa Clara County Bomb Squad arrived.

The device was detonated using standard protocol, according to police. Authorities believe the item washed ashore from a marine vessel.

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