The NYPD has boosted security at armed services recruiting depots and locales such as the Financial District and Times Square in response to Thursday's fatal shootings at military sites in Tennessee, police officials said.

"While we have no specific information about any plot against the city, until we learn more about the attack we have placed additional officers in key locations," said John J. Miller, the NYPD's deputy commissioner in charge of counterterrorism and intelligence, in a statement released last night.

After the shootings Thursday morning, the NYPD sent critical response vehicles to the recruiting stations and other "sensitive locations," including the Wall Street financial hub and Times Square, police said.

Miller said the NYPD has "been in regular contact with Tennessee authorities, the FBI Joint Terrorism Task Force and the intelligence community."

A gunman opened fire at a Navy Operational Support Center and Marine Corps Reserve Center seven miles away in Chattanooga, Tennessee, killing four Marines, officials said. The gunman was also killed.

A spokesman for the Marine Corps Recruiting Command in Quantico, Virginia, said no final decision had been made as of last night on heightened security at centers nationwide but more details are expected Friday.

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Nassau police said they would not increase their patrols in the wake of the shootings.

"We're aware of the incident, we are constantly monitoring national and world events and there's no known threat to any institution here in Nassau County," said Insp. Kenneth Lack, a department spokesman.

Suffolk police did not immediately respond to a request for information about whether they would be increasing security efforts at military centers.