NYPD tightens security following Boston Marathon explosions

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The NYPD is tightening security in New York City after two explosions killed two people and injured 22 others during the Boston Marathon Monday, according to Boston Police.

“We’re stepping up security at hotels and other prominent locations in the city through deployment of the NYPD’s critical response vehicles (CRVs) until more about the explosion is learned,” NYPD Deputy Commissioner Paul J. Browne said in a statement.

The explosions happened about three hours after the winners crossed the finished line, leaving a bloody and chaotic scene along the north side of Boylston St.

Cameras near the end of the race captured a massive ball of flame tearing through the stands just steps from the finish line.  As exhausted runners fled the explosion