New York City police are investigating the bombing Saturday night that injured 29 people just as the city is also preparing to host world leaders at the annual meeting of the United Nations General Assembly this week.
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Mayor Bill de Blasio promised that in light of the bombing in the city's Chelsea neighborhood and the UN meeting, the city is beefing up its police presence.
“You will see a very substantial NYPD presence this week," the mayor said. "Bigger than ever.”
Gov. Andrew Cuomo similarly announced Saturday that he had directed state police and the National Guard to deploy an additional 1,000 uniformed officers across the New York Metropolitan region.
"Out of an abundance of caution, we are increasing security at high-profile locations across the city, and all state agencies continue to remain on alert," Cuomo said in a statement.
Former NYPD commissioner Ray Kelly, a regular contributor to ABC News, said that in light of the explosion and the UN General Assembly the security efforts may require collaboration with national agencies, namely the Joint Terrorism Task Force, which is a partnership among U.S. law enforcement agencies tasked with responding to terrorism and terrorist threats.
But Kelly cautioned, "You don't have an inexhaustible group of people to help," secure the city.
He said law enforcement typically handles such a complex security efforts by breaking them into tiers, and that some members attending the General Assembly meeting may be considered to require more protection than others. He used Secretary of State John Kerry as an example of the type of figure who would receive the highest level of security, and said that it would likely be the NYPD's job to ensure that hotels at which UN members stay and events at which they are expected to attend are well-secured.
Kelly said law enforcement will be looking for tips from the public, a point echoed by the mayor.
"Be vigilant at this point in time," de Blasio said. "Not just because of this incident: Be vigilant because we're going into the United Nations Assembly week. Be vigilant because the police need your help. And if you see anything that might be pertinent to this case, we need you to call it in."