Comedian Tracy Morgan may never perform again, as a result of the injuries he sustained in a deadly accident earlier this year, his lawyer has said. The 45-year-old suffered serious injuries in a collision with an allegedly exhausted Walmart truck driver, who slammed into his limo bus on the New Jersey turnpike in June. Fellow comedian James McNair was killed in the crash as he and others were accompanying the former Saturday Night Live-star back from a show in Delaware. Scroll down for video . Career destroyed: Comedian Tracy Morgan may never perform again as a result of the crash in New Jersey in June this year which killed another comedian, James MacNair . Morgan . spent several weeks in rehab with rib and leg injuries, but is still . undergoing treatment for injuries to his brain, including daily speech, . cognitive, vocational and physical therapies. The 30 Rock star's lawyer, Benedict Morelli, said 'The jury’s still out' on whether Morgan will ever be able to perform again. 'The doctors don’t know the answer. I don’t know the answer,' he added, according to the New York Post's Page Six. Morgan . and several other passengers are suing Walmart, who responded to the . suit on Monday by claiming the comedian and his friends are to blame for . their injuries. In a statement issued Tuesday, Morgan responded: 'I can't believe Walmart is blaming me for an accident they caused.' Scarred for life: Morgan, pictured mid-July, is still undergoing treatment for injuries to his brain, including daily speech, cognitive, vocational and physical therapies . Scene: Morgan and friend were returning from a comedy show in Delaware when the Walmart truck collided with their limo bus . Tragedy:  Morgan's friend and fellow comedian James MacNair died in the accident . Morgan . says he felt like he had to respond publicly to Walmart's latest . effort, and went on to say that he and his friends did noting wrong in . the accident. Bentonville, . Arkansas-based Walmart Stores Inc. said in their Monday court filing . that the passengers' injuries were caused by their 'failure to properly . wear an appropriate available seatbelt restraint device,' which it says . constitutes unreasonable conduct. If . they had been wearing a restraint, Walmart argues that 'all or a . portion of the injuries could have been diminished or minimized.' An attorney representing Morgan and the other plaintiffs hasn't commented. Behind the wheel: Truck driver Kevin Roper allegedly had been working for more than a day when the accident happened. Pictured in New Jersey court on June 11 . Shattered glass: A view of the battered limo bus after the accident . Walmart didn't respond to claims that their driver, Kevin Roper, hadn't slept in more than 24 hours before the crash. The . company did admit though that Morgan and his friends' injuries 'may . have been caused by third parties over whom Walmart had no control.' After . the deadly crash, Roper was charged with causing the accident. Investigators believe he was dozing off behind the wheel in the moments . before the collision and didn't see the traffic ahead of him until it . was too late. '[The] . driver failed to observe slow-moving traffic ahead,' New Jersey State . Police Sgt. First Class Gregory Williams said. 'He observed at the last . minute -- just prior to impact -- the limo bus carrying Morgan and his . party.'
Tracy Morgan injured when Walmart driver slammed into his limo bus .
Fellow comedian James McNair was killed in the crash in New Jersey .
The 30 Rock star and other passengers had to be hospitalized .
His lawyer now says it is not known if Morgan will be able to perform again .
Walmart say they're not to blame since group weren't wearing seatbelts .
Comedian Tracy Morgan may never perform again, as a result of the injuries he sustained in a deadly accident earlier this year, his lawyer has said. The 45-year-old suffered serious injuries in a collision with an allegedly exhausted Walmart truck driver, who slammed into his limo bus on the New Jersey turnpike in June. Fellow comedian James McNair was killed in the crash as he and others were accompanying the former Saturday Night Live-star back from a show in Delaware. Scroll down for video . Career destroyed: Comedian Tracy Morgan may never perform again as a result of the crash in New Jersey in June this year which killed another comedian, James MacNair . Morgan . spent several weeks in rehab with rib and leg injuries, but is still . undergoing treatment for injuries to his brain, including daily speech, . cognitive, vocational and physical therapies. The 30 Rock star's lawyer, Benedict Morelli, said 'The jury’s still out' on whether Morgan will ever be able to perform again. 'The doctors don’t know the answer. I don’t know the answer,' he added, according to the New York Post's Page Six. Morgan . and several other passengers are suing Walmart, who responded to the . suit on Monday by claiming the comedian and his friends are to blame for . their injuries. In a statement issued Tuesday, Morgan responded: 'I can't believe Walmart is blaming me for an accident they caused.' Scarred for life: Morgan, pictured mid-July, is still undergoing treatment for injuries to his brain, including daily speech, cognitive, vocational and physical therapies . Scene: Morgan and friend were returning from a comedy show in Delaware when the Walmart truck collided with their limo bus . Tragedy:  Morgan's friend and fellow comedian James MacNair died in the accident . Morgan . says he felt like he had to respond publicly to Walmart's latest . effort, and went on to say that he and his friends did noting wrong in . the accident. Bentonville, . Arkansas-based Walmart Stores Inc. said in their Monday court filing . that the passengers' injuries were caused by their 'failure to properly . wear an appropriate available seatbelt restraint device,' which it says . constitutes unreasonable conduct. If . they had been wearing a restraint, Walmart argues that 'all or a . portion of the injuries could have been diminished or minimized.' An attorney representing Morgan and the other plaintiffs hasn't commented. Behind the wheel: Truck driver Kevin Roper allegedly had been working for more than a day when the accident happened. Pictured in New Jersey court on June 11 . Shattered glass: A view of the battered limo bus after the accident . Walmart didn't respond to claims that their driver, Kevin Roper, hadn't slept in more than 24 hours before the crash. The . company did admit though that Morgan and his friends' injuries 'may . have been caused by third parties over whom Walmart had no control.' After . the deadly crash, Roper was charged with causing the accident. Investigators believe he was dozing off behind the wheel in the moments . before the collision and didn't see the traffic ahead of him until it . was too late. '[The] . driver failed to observe slow-moving traffic ahead,' New Jersey State . Police Sgt. First Class Gregory Williams said. 'He observed at the last . minute -- just prior to impact -- the limo bus carrying Morgan and his . party.'
Comedian Tracy Morgan may never perform again, as truck driver, who slammed into his limo bus on the New Jersey turnpike in June. Fellow comedian James McNair was killed in the crash as he and physical therapies. The 30 Rock star's lawyer, whether Morgan will ever be able to perform several other passengers are suing Walmart, who