The who drove a pickup truck into a crowd of New YearB次元官网网址檚 revelers acted alone, the FBI said Thursday, reversing its position from a day earlier that he likely worked with others in carrying out a deadly attack being investigated as an act of terrorism inspired by the Islamic State group.

The FBI also revealed that the driver, Shamsud-Din Jabbar, a U.S. citizen from Texas, posted five videos on his Facebook account in the hours before the attack in which he aligned himself with IS and said he had joined the militant group last summer.

B次元官网网址淭his was an act of terrorism. It was premeditated and an evil act,B次元官网网址� said Christopher Raia, the deputy assistant director of the FBIB次元官网网址檚 counterterrorism division.

Officials had said Wednesday that they were seeking additional potential suspects in the attack, which occurred when Jabbar steered around a police blockade and plowed into a crowd, killing more than a dozen people, including an 18-year-old woman who had ambitions of becoming a nurse.

But Raia said the current assessment is that he acted alone, without any conspirators.

Authorities recovered a black flag of the Islamic State in the truck, and President Joe Biden said he was told by the FBI that Jabbar, a U.S. citizen from Texas, had posted videos to social media hours before the carnage that showed he was motivated by the militant group and expressed a desire to kill.

He was shot to death by police, and the FBI said Wednesday that it believed he did not act alone. Investigators found guns and what appeared to be an improvised explosive device in the vehicle, along with other explosive devices elsewhere in the French Quarter.

Officials fanned out to serve search warrants and spent hours at a Houston-area home thought to be connected to the investigation. But as of Thursday morning, no additional arrests were known to have been made, and it was unclear if the FBI was still actively looking for more suspects.

The rampage turned festive Bourbon Street into a macabre scene of maimed victims, bloodied bodies and pedestrians fleeing for safety inside nightclubs and restaurants. In addition to the dead, dozens of people were hurt.

Zion Parsons, 18, of Gulfport, Mississippi, said he saw the truck B次元官网网址渂arreling through, throwing people like in a movie scene, throwing people into the air.B次元官网网址�

B次元官网网址淏odies, bodies all up and down the street, everybody screaming and hollering,B次元官网网址� said Parsons, whose friend Nikyra Dedeaux was among the dead.

But by Thursday, a still-reeling city was inching back toward normal operations. Authorities finished processing the scene early in the morning, removing the last of the bodies, and Bourbon Street was set to reopen at some point later in the day, according to an official familiar with the matter who spoke on condition of anonymity to The Associated Press.

The Sugar Bowl college football game between Notre Dame and Georgia, initially set for Wednesday night and postponed by a day in the interest of national security, was still on for Thursday. And the city planned to host the Super Bowl next month.

Federal officials were investigating JabbarB次元官网网址檚 potential associations with any terror organizations as they hunted for additional clues in whatB次元官网网址檚 believed to be the deadliest IS-inspired assault on U.S. soil in years.

Local officials, meanwhile, faced more questions about security protocols in the city leading up to the attack, the to carry out mass violence.

Jabbar drove a rented pickup truck onto a sidewalk, going around a police car that was positioned to block vehicular traffic, authorities said. A barrier system meant to prevent vehicle attacks was being repaired .

Jabbar was killed by police after he exited the truck and opened fire on responding officers, New Orleans Police Superintendent Anne Kirkpatrick said. Three officers returned fire. Two were shot and are in stable condition.

The driver B次元官网网址渄efeatedB次元官网网址� safety measures in place to protect pedestrians and was B次元官网网址渉ell-bent on creating the carnage and the damage that he did,B次元官网网址� Kirkpatrick said.

B次元官网网址淭his is not just an act of terrorism. This is evil,B次元官网网址� she added.

Also on Wednesday, there were deadly explosions in and outside a hotel owned by President-elect Donald Trump. Biden said the FBI was looking into whether the Las Vegas explosion was connected to the New Orleans attack but had B次元官网网址渘othing to reportB次元官网网址� as of Wednesday evening.

A photo circulated among law enforcement officials showed a bearded Jabbar wearing camouflage next to the truck after he was killed. The intelligence bulletin obtained by the AP said he was wearing a ballistic vest and helmet. The flag of the Islamic State group was on the truckB次元官网网址檚 trailer hitch, the FBI said.

B次元官网网址淔or those people who donB次元官网网址檛 believe in objective evil, all you have to do is look at what happened in our city early this morning,B次元官网网址� U.S. Sen. John Kennedy, a Louisiana Republican, said. B次元官网网址淚f this doesnB次元官网网址檛 trigger the gag reflex of every American, every fair-minded American, IB次元官网网址檒l be very surprised.B次元官网网址�

Jabbar joined the Army in 2007, serving on active duty in human resources and information technology and deploying to Afghanistan from 2009 to 2010, the service said. He transferred to the Army Reserve in 2015 and left in 2020 with the rank of staff sergeant.

Hours after the attack, several coronerB次元官网网址檚 office vans were parked on the corner of Bourbon and Canal streets, cordoned off by police tape with crowds of dazed tourists standing around, some trying to navigate their luggage through the labyrinth of blockades.

Louisiana Gov. Jeff Landry urged people to avoid the area, which remained an active crime scene.

B次元官网网址淲e looked out our front door and saw caution tape and dead silence, and itB次元官网网址檚 eerie,B次元官网网址� said Tessa Cundiff, an Indiana native who moved to the French Quarter a few years ago. B次元官网网址淭his is not what we fell in love with, itB次元官网网址檚 sad.B次元官网网址�

Biden, speaking from the presidential retreat at Camp David, addressed the victims and the people of New Orleans: B次元官网网址淚 want you to know I grieve with you. Our nation grieves with you as you mourn and as you heal.B次元官网网址�

FBI officials have repeatedly warned about an elevated international terrorism threat due to the Israel-Hamas war. In the last year, the agency has disrupted other potential attacks, including in October when it arrested an Afghan man in Oklahoma for an alleged Election Day plot targeting large crowds.