President Biden called New Orleans Mayor LaToya Cantrell on Wednesday “to offer full federal support” after a truck driver killed at least 15 people who were celebrating New Year’s Eve on Bourbon Street.

The retiring 82-year-old president placed the call from his private residence in Wilmington, Del., ahead of a planned trip to Camp David in Maryland.

“President Biden called New Orleans Mayor LaToya Cantrell this morning to offer full federal support following the horrific news that a driver killed and injured dozens of individuals in New Orleans overnight,” the White House said.

“The President has been briefed on the latest developments by senior FBI and DHS leadership and his homeland security team, and he will continue to be briefed on this incident throughout the day. FBI is leading the investigation and is working closely with local and state officials.”

The FBI later identified 42-year-old Shamsud-Din Jabbar from Texas as the suspect behind the rampage.

Jabbar was a US citizen and “appears” to have rented the Ford pickup truck he drove, according to the bureau. 

He died after exchanging gunfire with authorities, the FBI said.

The FBI confirmed in a Wednesday morning statement that it was investigating the “act of terrorism” after claiming an hour before that the slaughter was “not a terrorist event” — despite “improvised explosive devices” having been recovered.

The bureau later revealed that “an ISIS flag was located in the vehicle” and that it is still working to figure out whether the suspect had any ties or “affiliations with terrorist organizations.” 

Initially, the FBI had claimed that the slaughter was “not a terrorist event” despite “improvised explosive devices” having been recovered.

However, about an hour after that initial claim Wednesday morning, the FBI later backtracked.

The vehicular carnage along the popular tourism street drew immediate parallels to well-known terrorist acts

In addition to the 15 killed in the attack, two law enforcement officers were also wounded and moved to a nearby hospital, per the FBI.

“This morning, an individual drove a car into a crowd of people on Bourbon Street in New Orleans, killing a number of people and injuring dozens of others. The subject then engaged with local law enforcement and is now deceased. The FBI is the lead investigative agency, and we are working with our partners to investigate this as an act of terrorism,” the bureau said.

There were weapons and a “potential IED” discovered in the vehicle, the FBI confirmed.

The FBI’s special agent bomb technicians are investigating those potential IED devices. 

Cantrell had declared in a press conference beforehand: “The city of New Orleans was impacted by a terrorist attack.”

In a subsequent statement, Biden added: “The FBI is taking the lead in the investigation and is investigating this incident as an act of terrorism.”

“I will continue to receive updates throughout the day, and I will have more to say as we have further information to share,” he said. “In the meantime, my heart goes out to the victims and their families who were simply trying to celebrate the holiday. There is no justification for violence of any kind, and we will not tolerate any attack on any of our nation’s communities.”

House Speaker Mike Johnson (R-La.) called the slaughter “an act of pure evil” and demanded accountability from any living participants in the attack.

“The vicious attack on innocent people celebrating the New Year in New Orleans early this morning was an act of pure evil, and justice must be swift for anyone who was involved,” Johnson said.