Two days before the 24th anniversary of the Sept. 11 terrorist attacks, police presence is swelling in efforts to protect New York City 's infrastructure after a spike in reported threats, New York City Police Commissioner Jessica Tisch said Tuesday.

Tisch at a news conference noted that threats typically increase this time of year, mentioning the anniversary of the attacks, U.N. General Assembly and Jewish High Holidays this month.

"We are monitoring threats against New York City critical infrastructure, including bridges and tunnels connecting Queens and Manhattan," Tisch told reporters.

"As always, we take this seriously, and we are working with our federal partners through our Joint Terrorism Task Force as we investigate," she said. "Out of abundance of caution, we are surging r

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