Donald Trump has suggested Isis is behind the murder of eight people in a truck attack in the heart of downtown Manhattan, despite no claims having been made by the terror group.
The President took to Twitter and named the terror group directly, saying it must not be allowed to "enter" the US - only hours after the incident.
Isis has yet to take responsibility for the attack in which eight people died and dozens more were injured after a 29-year-old man ran over pedestrians with a truck.
"We must not allow ISIS to return, or enter, our country after defeating them in the Middle East and elsewhere. Enough!" Mr Trump tweeted.
Mr Trump also described the attacker as a "sick and deranged" person.
"In NYC, looks like another attack by a very sick and deranged person," Mr Trump tweeted. "Law enforcement is following this closely. NOT IN THE U.S.A.!"
The incident itself took place near the West Side Highway and Chambers St, in close proximity to Stuyvesant High School, the Freedom Tower, and the September 11th Memorial, where the World Trade Center once stood.
Officials said that a pickup truck was driven down a bike path located alongside the Hudson River.
The NYPD said the man, who is believed to have driven the vehicle, then exited and started displaying what subsequently emerged to be imitation firearms.
There were eyewitness reports of several shots fired near the September 11th memorial site but there has been no report as to whether all the deaths were due to the vehicle or shots fired.
The suspect was shot by police on the scene and has now been taken into custody.
The incident is being treated as a terrorist attack and the FBI has taken charge of the investigation.
