NEW YORK – On Wednesday, U.S. investigators were focused on an Uzbek immigrant they said killed eight people in New York by driving a rental truck down a riverfront bike path in an attack authorities said had all the hallmarks of terrorism.

The suspect, who was shot by police and arrested moments after the Tuesday rampage in lower Manhattan, left a note saying he carried out the attack in the name of ISIS, the New York Times and CNN said.

It was the deadliest single attack on New York City since Sept. 11, 2001, when suicide hijackers crashed two jetliners into the World Trade Center, killing more than 2,600 people. A further 11 people were injured in Tuesday’s attack.

The suspect allegedly swerved the pickup onto a path filled with pedestrians and bicyclists on a sunny autumn afternoon, mowing down people in his path before slamming into the side of a school bus.

He then exited the vehicle brandishing what turned out to be a paint-ball gun and a pellet gun before a police officer shot him in the abdomen.

The attack, which left crumpled bicycles scattered along the path and victims writhing on the ground, was over in seconds.

The suspect underwent surgery for gunshot wounds.

Police declined to publicly identify the man, but a source familiar with the investigation said his name was Sayfullo Saipov, 29. He reportedly lived in Paterson, New Jersey, a one-time industrial hub about 25 miles (40 km) northwest of lower Manhattan.

He had rented the pickup from a Home Depot Inc hardware store which, according to media accounts, was located in Passaic, just south of Paterson.