After Boston Marathon Blasts, NYPD Tightens Security

5:01 p.m.: Boston Police Commissioner Ed Davis says during media briefing that a third incident occured at JFK library. Not certain related if related to the incidents that happened simultaneously on Boylstons Street, but Boston Police are treating it like it is, Backbay Patch reported.  

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Following a pair of explosions that left at least two dead and at least 22 injured at the Boston Marathon, the NYPD is tightening security at home.

"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," Paul J Browne, the NYPD's deputy commissioner,  said in a written statement.  

Mayor Michael Bloomberg issued a statement confirming that security has been increased.

“The NYPD has stepped up security at strategic locations and critical infrastructure, including our subways," he said in a written statement.

"We have 1,000 members of the NYPD assigned to counter-terrorism duties, and they – along with the entire NYPD and the investments we have made in counter-terrorism infrastructure – are being fully mobilized to protect our city," he added.

If you encounter a suspicious or abandoned package, do not attempt to investigate it yourself. In New York City you can call 311, contact a police officer or MTA respresentative if the package has been left somewhere in the transit system, the NYPD said.

The Federal Aviation Administration has issued a temporary flight restriction in Boston, Boston Patch reports.

See the most recent coverage by Patch's Boston sites here.