The star's hand was badly injured.

Shia LaBeouf's injured hand is vulnerable to infections and other complications after last weekend's truck wreck, his lawyer tells the Associated Press, and we have the first pics of the actor's cast.

"Shia's left hand was crushed," his attorney Michael Norris says of the accident.

The 'Transformers' star was arrested after his crash on suspicion of drunk driving. He then underwent "extensive" hand surgery. On Tuesday, an LAPD spokesman told ET that Shia didn't cause the accident -- the other driver involved blew a red light.