VIDEO: Chelsea explosion captured by surveillance cameras

CHELSEA, Manhattan -- Surveillance video shows the explosion in Chelsea that injured dozens of people Saturday night.

The explosion went off at about 8:30 p.m. on West 23rd between 6th and 7th avenues.

The video shows the blast and then the aftermath with people running away. Click on the video player above to watch.

The explosion was felt and heard for many blocks.
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