NEW YORK —  New York— Cops have lifted fingerprints from the bicycle they believe was used by the Times Square bomber and hope to use them to nab the man who blew up the military recruiting center, a police source said yesterday.

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Investigators are also sifting through shards from the metal ammunition box that exploded at the scene Thursday morning, as well as checking the bike, for DNA that might have been left by the bomber. They're also checking records of cellphone transmissions around the area for clues, the source said.

• Click here to view photos from the blast.

Cops will first compare the fingerprints left on the frame of the blue Ross 10-speed bike with those of people they expect to rule out in the crime: the several construction workers and a building superintendent who handled it after finding it dumped in a trash bin on East 38th Street several hours after the bombing, the source said.

"We're eliminating non-suspects' fingerprints first," the source said.

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If there are any remaining prints on the bike, they will be checked against databases of fingerprints of previously arrested people, the source said.

As seen on surveillance video, the bomber bicycled up to the recruiting center around 3:40 a.m. and left a small ammunition box filled with black-powder explosives outside.