ISIS has threatened to bomb New York City in a newly released video, just days after vowing to attack Washington, D.C.
The slick clip features shots of yellow taxis and crowds in Times Square and Herald Square in Manhattan, with vibrant French music playing in the background - a nod to the Paris terror attacks on Friday.
It then cuts to a man wrapping a bomb around his waist before walking into the crowds and pulling the trigger.
New York police have issued a statement to say they are aware of the footage.
They added that there is no direct threat to the city but insist there is a 'heightened state of vigilance'.
'In addition, we are continuing to deploy additional Critical Response Command (CRC) teams throughout the City, out of an abundance of caution,' Stephen Davis, a Deputy NYPD Commissioner, said in a statement on Wednesday.
He added: 'While some of the video footage is not new, the video reaffirms the message that New York City remains a top terrorist target.'
The video, which runs for nearly six minutes, includes a scene that appears to show a suicide bomber making preparations and zipping up a leather jacket.
The clip shows a brief glimpse of Times Square and then of a suicide bomber holding what appears to be a trigger, it said.
Most of the footage is scenes of Paris and of French President Francois Hollande.
The New York footage was featured in an ISIS video released in April this year.
Mayor Bill de Blasio said: 'Stoking fear is the goal of terrorist organizations, but New York City will not be intimidated.'
He added that police were 'taking all necessary precautions' in Times Square and Herald Square, and elsewhere around the city.
New York state governor Andrew Cuomo has also addressed the video in a statement, vowing to step up all security to detect any threats before they become a reality.
'I want every New Yorker to know that their security is our absolute highest priority. The video released by ISIS today contains old footage of New York, and there is no specific terrorist threat to New York at this time.
'After the Paris attacks, I directed state agencies to enhance their preparedness out of an abundance of caution and remain in close contact with local and federal authorities, including the FBI and NYPD through the Joint Terrorism Task Force, and that vigilance continues today.
'I encourage all New Yorkers to remain alert and report any suspicious activity, while at the same time not letting this disrupt their daily lives. Remember that the terrorists' goal is to let fear win – New Yorkers never have, and we never will.'
The latest threat comes just two days after the terrorist group made a direct threat to strike Washington, D.C.
In a video posted on Monday, an armed fighter addresses the camera to say in Arabic: 'We say to the states that take part in the crusader campaign that, by God, you will have a day God willing, like France's and by God, as we struck France in the center of its abode in Paris, then we swear that we will strike America at its center in Washington.'
ISIS has already claimed responsibility for the coordinated terror attacks in Paris which killed at least 129 people.
The Washington video emerged as CIA Director Brennan told the Center for Strategic and International Studies' annual Global Security Forum on Monday that he hoped the Paris attacks were a wake-up call for security services and warned that ISIS will attempt more terror atrocities.
'I would anticipate that this is not the only operation that ISIS has in the pipeline,' he said.
By Mia De Graaf
