Officials who weren't authorized to discuss the investigation and spoke on the condition of anonymity identified the attacker as 29-year-old Sayfullo Saipov and said he is from Uzbekistan and came to the U.S. legally in 2010. The officials said Saipov has a Florida driver's license and may have been staying in New Jersey, and a family friend described roots he had in Ohio, where he lived years ago and was a commercial truck driver.