A Georgia truck driver has been charged in a New Jersey wreck that left comedian Tracy Morgan in critical condition and another man dead , authorities said Saturday . Kevin Roper , 35 , of Jonesboro , was charged with one count of death by auto and four counts of assault by auto after the tractor-trailer he was driving crashed into the limo bus carrying the comedian and others , the Middlesex County Prosecutor 's Office said . Initial reports indicated there were seven people injured in the crash , but the prosecutor 's statement put the number at four . Morgan 's condition was not expected to change Saturday , publicist Lewis Kay said . `` His family is now with him and he is receiving excellent care . '' Morgan , 45 , was a regular on `` Saturday Night Live '' for seven years and received an Emmy nomination for his role on `` 30 Rock , '' in which he played Tracy Jordan , an exaggerated version of himself . The New York City native made his reputation with over-the-top characters and impressions of celebrities such as Mike Tyson and Oprah Winfrey . The wreck occurred at about 1 a.m . ET on Saturday on the turnpike in Mercer County , said Sgt . Gregory Williams of New Jersey State Police . `` NJSP says the driver of the tractor-trailer failed to observe slow-moving traffic ahead , '' Williams said . `` At the last minute , he swerved to try and avoid the Mercedes limo bus but struck it from behind , forcing the limo to rotate and overturn . '' A limo passenger , 63-year-old James McNair of Peekskill , New York , was killed and three people besides Morgan were taken to the hospital , authorities said . McNair was a comedian who performed under the name Jimmy Mack , said his sister , Valerie Daniel . `` He spoke very highly of Tracy , '' she told CNN . `` They go way back . '' The prosecutor 's statement said Morgan and two others , whose identities have not been formally released , remain hospitalized in critical condition . The remaining passenger was treated at the hospital and was released , the statement said . Four other vehicles were involved in the crash , the prosecutors said , but the people in those vehicles were not injured . Williams said he does not believe alcohol played a role in the accident , but that is under investigation . Brooke Buchanan , a Walmart spokesperson , said the truck driver is a Walmart employee . `` This is a tragedy and we are profoundly sorry that one of our trucks was involved , '' said Bill Simon , president and CEO of Walmart U.S. , in a statement . `` The facts are continuing to unfold . If it 's determined that our truck caused the accident , Walmart will take full responsibility . '' The National Transportation Safety Board will investigate `` safety issues related to commercial trucking and limousine safety , '' said agency spokesman Keith Holloway . Christopher Thompson , spokesman for limo owner Atlantic Transportation Services , said driver Tyrone Gale , who is part owner of the company , was shaken up . `` Although the investigation is still pending , we concur with the preliminary reports that the accident was caused by another vehicle traveling behind the Atlantic limo bus and we are grateful that our drivers did not sustain life-threatening injuries , '' Thompson said . Morgan performed a comedy tour act Friday night at the Dover Downs Hotel & Casino in Dover , Delaware , the venue said . Thompson said he thought the limo bus was heading to drop Morgan off in New Jersey . The actor received messages of support and concern on Twitter . `` Wishing a speedy recovery to our friend @ RealTracyMorgan , '' tweeted SNL Weekend Update . `` Shocked to wake up and read that @ RealTracyMorgan is injured . Love to Tracy and wishing him strength , '' said former SNL cast member Rachel Dratch . `` My thoughts are with Tracy Morgan and his family . I hope he pulls through this soon and gets back to making us laugh ! '' said Joan Rivers . `` Saying a prayer for @ RealTracyMorgan , '' said actor-director Jon Favreau . `` Come on @ RealTracyMorgan pull through this buddy , '' tweeted actor Ike Barinholtz of `` The Mindy Project . '' Funny man Tracy Morgan has known fame and foibles .
Truck driver charged in connection with the wreck . Comedian McNair James `` Jimmy Mack '' was killed . James `` Jimmy Mack '' happened on Twitter early Saturday early Saturday . Morgan , a former ` ` Saturday Night Live '' cast member , was riding in a limo bus .