SANTA MONICA (CBS) — A mechanical failure that was initially believed to be a pipe bomb caused damage to a roof near a Jewish center early Thursday morning.

The incident took place near the Chabad House of Santa Monica at 1448 17th Street at 6:45 a.m. Some debris from the explosion landed on a nearby roof, but no injuries were immediately reported.

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(Credit: CBS)

Police evacuated a four-block area around the center and roughly 100 residents were told to leave their homes.

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Sgt. Jay Trisler tells KNX 1070 that the explosion “was not an intentional act” and or the result of any type of “incendiary device.”

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No other details were immediately available.