Tracy Morgan transferred to rehab center to recover

Actor and comedian Tracy Morgan has transferred to an undisclosed rehab facility following the New Jersey highway crash that badly injured him and killed one of his friends, his rep said Friday. He is expected to remain there for the next few weeks.

“While he is continuing to show signs of improvement, he still has a long way to go,” his rep said in a statement sent to FOX411. “He and Megan wanted to publicly express their deepest gratitude to everyone at Robert Wood Johnson University Hospital for the unbelievable care and attention they provided him.”

The 45-year-old former "Saturday Night Live" and "30 Rock" star suffered broken ribs and a broken leg in the June 7 crash on the New Jersey Turnpike. The crash killed fellow comedian James McNair and seriously injured two other people.

Prosecutors say Wal-Mart driver Kevin Roper's truck hit Morgan's limo. The Jonesboro, Georgia, resident has pleaded not guilty to death by auto and assault by auto charges.

A criminal complaint alleges Roper hadn't slept for more than 24 hours before the accident when he swerved to avoid slowed traffic on the turnpike and plowed into Morgan's limo.

Wal-Mart Stores Inc., based in Bentonville, Arkansas, has not explained what Roper's driving route was. It has said it believes he was in compliance with federal safety regulations.

The Associated Press contributed to this report.