A federal grand jury has indicted Sayfullo Saipov on terrorism charges stemming from the NY truck attack in which eight people were killed - also expanding the allegations to include murder in aid of a criminal enterprise.
A grand jury returned a 22-count indictment against Sayfullo Saipov after prosecutors initially announced only two: provision of material support and resources to a foreign terrorist organisation, and violence and destruction of motor vehicles.
Saipov, 29, was indicted in Manhattan on 22 counts, ranging from terrorism to both murder and attempted murder in aid of racketeering in connection to the October 31 terror attack, which left eight people dead and 12 wounded.
Former Attorney General Michael Mukasey reacts to what the USA should be doing in response to the threat.
U.S. Attorney General Jeff Sessions called the attack a "calculated act of terrorism in the heart of one of our great cities".
Islamic State claimed responsibility for the truck attack, which was the deadliest assault on New York City since 11 September 2001. Prosecutors have not said whether they plan to seek the death penalty.
Casualties are stretchered into ambulances after the October attack where eight people were killed
Mr Saipov, an Uzbek immigrant, was treated in hospital after he was shot by a police officer and arrested.
He drove several blocks south, hitting "numerous" civilians along the way - eventually ramming into an occupied school bus near West and Chambers Sts.
Saipov came to the United States from Uzbekistan in 2010.
He first lived in OH, where he was a commercial truck driver, then in Florida.
Authorities said in court papers that Saipov told investigators he was inspired to carry out the attack after watching a video of IS leader Abu Bakr al-Baghdadi questioning "what Muslims in the United States and elsewhere were doing to respond to the killing of Muslims in Iraq". Cops found two cell phones and a stun gun in his truck.
"When Sayfullo Saipov carried out his brutal attack last month, his intentions were to inflict significant damage, death and injury to innocent victims and terrorize this city", Sweeney added. One of the phones was filled with almost 90 ISIS propaganda videos, the feds have said.