Underground explosion sends manhole cover flying in South Philadelphia

An underground explosion rattled a block in South Philadelphia.

SOUTH PHILADELPHIA (WPVI) -- An underground explosion rattled a block in South Philadelphia.

It happened at 1 a.m. Saturday at the intersection of South 16th and McKean streets.
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Police and fire crews responded to the scene after reports of a loud noise and smoke pouring from a manhole.

PICTURES: Underground explosion sends manhole cover flying in South PhiladelphiaWPVI

Apparently the force of the blast sent the manhole cover flying.
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Fortunately, no one was hurt, and the power never went out.

PECO is investigating.