The semi-truck driver accused of causing a deadly crash on Florida’s Turnpike is being held without bond at the St. Lucie County Jail after being extradited from California.

Washington authorities probe how Harjinder Singh obtained his commercial license before the wreck that has become entangled in immigration policy debates.

Harjinder Singh, the man accused of killing three people after he allegedly made an illegal U-turn on the Florida Turnpike, has been extradited to Florida. Singh's brother has also been arrested on charges related to the deadly crash.