Actor Tracy Morgan was seriously injured when his limo bus overturned in a road accident involving multiple vehicles in New Jersey early on Saturday morning, police said.

Morgan, best known for his roles on “Saturday Night Live” and “30 Rock,” was taken by helicopter to Robert Wood Johnson University Hospital Center in New Brunswick, New Jersey, in critical condition, said Gregory Williams, a New Jersey State Police spokesman.

The comedian’s tour bus collided with a pair of tractor-trailers north of Trenton around 1 a.m. on Saturday. State police tell Philadelphia’s NBC10 that one of the truckers was to blame. Reports say six vehicles were involved, all told.

Morgan was taken to Robert Wood Johnson Medical Center in New Brunswick. Police say one of the passengers from his bus has died; three others were critically injured and one is listed as being in fair condition.

Morgan grew up fatherless, one of five siblings, in a blighted section of Brooklyn, where he helped raise and support the family.He once called his gift for being funny “a defense mechanism” for his miserable circumstances. As a teen, he started doing comedy on the streets to supplement the family’s welfare income.He had a kidney transplant in late 2010.

The New Jersey Turnpike was closed for more than five hours after the crash.