• KYW News 4:30-7am
    04:00 AM - 07:00 AM

PHILADELPHIA (CBS) — Philadelphia police say an explosion heard on the highway was caused by a firecracker.

The explosion was heard shortly after 1 p.m. on the 100 block of West Oxford Street.

Investigators say it was determined an M80 firecracker caused the explosion.

Another box was found on the highway near a white vehicle, but that item was cleared.

The bomb squad is on location.

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