More details are emerging about Sayfullo Saipov, the 29-year-old suspect in Tuesday's ramming attack in Manhattan.

Saipov, who had been living in Tampa, Florida, is originally from Uzbekistan, having arrived in the U.S. in 2010.

According to The New York Times, investigators discovered handwritten notes in Arabic near the truck used by Saipov that indicated allegiance to the Islamic State (ISIS) jihadist organization.

At the same time, the newspaper said, investigators had not uncovered evidence of any direct or enabling ties between Saipov and ISIS and were treating the episode as a case of an “inspired” attacker.

The Associated Press quoted a law enforcement official who said that Saipov rented the truck he used in the attack about an hour before the attack.

Although Saipov has a Florida license, he may have been staying in New Jersey, the official said.

After the ramming attack, Saipov smashed into a school bus, jumped out of his truck and ran up and down the highway waving a pellet gun and paintball gun and shouting "Allahu Akbar" before he was shot in the abdomen by an officer.

Eight people were killed in the attack and 11 were injured, according to The New York Times.

New York City Mayor Bill de Blasio described the attack as “a particularly cowardly act of terror aimed at civilians, aimed at people going about their lives, who had no idea what was about to hit them.”

President Donald Trump on Tuesday night offered condolences to the victims of the terrorist attack in Manhattan, writing on Twiiter, “My thoughts, condolences and prayers to the victims and families of the New York City terrorist attack. God and your country are with you!”

Trump had earlier tweeted, “In NYC, looks like another attack by a very sick and deranged person. Law enforcement is following this closely. NOT IN THE U.S.A.!”

“We must not allow ISIS to return, or enter, our country after defeating them in the Middle East and elsewhere. Enough!” he added.