On Wednesday, federal prosecutors in NY filed terrorism charges against an Uzbek immigrant in the deadly truck attack on a NY bike path. Sayfullo Saipov, 29, was charged after the attack Tuesday afternoon near the World Trade Center killed eight people and wounded a dozen others.
It was not immediately clear why the Federal Bureau of Investigation was searching Wednesday for 32-year-old Mukhammadzoir Kadirov.
In that attack, Uzbek native and U.S. permanent resident Sayfullo Saipov, 29, drove a truck through cyclists and pedestrians, killing eight and injuring 12.
The anonymous intermediary who gave the statement to the Associated Press said Kadirov only knew Saipov from working together for Uber, and they are not "close friends".
Police are looking for information about Mukhammadzoir Kadirov in relation to the attack.More news: Alabama kidnapping victim escapes trunk
In addition to killing eight people, Saipov injured 13 others.
Sources said that Saipov was pleased with the attack and was unapologetic, according to CBS News. CNN, citing police officials, said he had left a note saying he carried out the attack in the name of Islamic State and had shouted "Allahu Akbar" - Arabic for "God is greatest".
"We have found him and I'll leave it at that", said William Sweeney, head of the New York FBI office.
He was slated to be arraigned on terrorism charges Wednesday night.
Anyone with information is urged to call the FBI's toll-free tipline at 1-800-CALL-FBI (5324).