A Black Standard and a document indicating allegiance to the terrorist group Islamic State of Iraq and the Levant (ISIL) were found in the truck.

A federal grand jury indicted 29-year-old Saipov, who had immigrated to the United States from Uzbekistan in 2010, with eight murders in the aid of racketeering, twelve attempted murders in the aid of racketeering, destruction of a motor vehicle and providing material support for a terrorist organization.

[5] Following the 2002 Los Angeles International Airport shooting, this was the second terrorist attack by a person who participated in the Diversity Immigrant Visa program.

At 2:06 p.m. EDT on October 31, 2017, a man rented a pickup truck at a The Home Depot in Passaic, New Jersey.

At 2:43 p.m., he crossed the George Washington Bridge and entered Manhattan, proceeding south down the West Side Highway.

Saipov struck all 10 people, killing each person on the left column while leaving those on the right with injuries.

Just after running over the man from New Jersey, Saipov swerved and struck a teacher from Stuyvesant High School who was about to enter the lane on a Citi bike.

Just ahead of the teacher, the man fatally struck a final bicyclist, throwing his body into the air.

In the process, he drove onto the median, spreading dirt everywhere, hit a sign, knocked over a traffic light, then crashed into a school bus that was transporting students with special needs.

[7] He was shot in the abdomen by New York City Police Department officer Ryan Nash, taken into custody, and transported to Bellevue Hospital for medical care.

[6] The perpetrator, 29-year-old Sayfullo Habibullaevic Saipov, was born in Tashkent, Uzbekistan, then a part of the Soviet Union, on February 8, 1988,[22][23] and lived most of his life in the districts of Beltepa and Uchtepa.

[32] An acquaintance of Saipov since 2010 described him as a "little aggressive", and not very religious when he arrived in the U.S.[33] A friend in Ohio said he was prone to getting into fights and misunderstandings.

[38] John Miller, the deputy commissioner of the New York Police Department, said Saipov did it in the name of Islamic State of Iraq and the Levant (ISIL), a jihadist militant group fighting in the Iraqi and Syrian civil wars, and appeared to have followed "almost exactly to a T" the group's advice on social media on how to carry out vehicular attacks.

[40] White House Press Secretary Sarah Huckabee Sanders said the Trump administration considers him an "enemy combatant.

"[41] While in custody, Saipov waived his Miranda rights and told police he deliberately chose Halloween to commit the attack and had made a test drive near the route, renting a truck on October 22 for that purpose.

He requested to display the ISIL flag in his hospital room and, according to the complaint, "stated that he felt good about what he had done.

"[43] On November 1, 2017, federal prosecutors charged Saipov with providing material support for terrorism that has caused at least one death.

[45] On January 17, 2018, in a letter to Judge Vernon Broderick, the defense said Saipov would plead guilty to all counts and serve life in prison if the death penalty option was made unavailable.

[51][52] On February 14, 2023, the sentencing phase began for Saipov, with the prosecution seeking the death penalty in his case.

[7][62] President Donald Trump ordered the Department of Homeland Security to "step up" its "Extreme Vetting Program".

[65] New York City Mayor Bill de Blasio called the attack a "particularly cowardly act of terror".

"[66] He also directed One World Trade Center's spire to be lit up in red, white, and blue, the colors of the American flag, to memorialize the victims of the attacks.

[75] After the attack, several media sources wrote about how easy it was to drive down Hudson River Park's bike lane, either by accident or on purpose.