'The Wire' Star Anwan Glover -- Stabbed and Beaten Inside a DC Nightclub

"The Wire" star Anwan Glover was stabbed inside a Washington DC nightclub early Sunday morning.

Glover -- who played Slim Charles -- was in Cafe Asia when he claims 2 men started beating him. He says he heard someone scream, "He has a knife," and then felt a sharp pain.

Glover -- who also appeared in "Twelve Years a Slave" -- was taken to a local hospital with lacerations and bruises.

It's unclear why the fight started ... or the relationship between the men who beat and stabbed him.

We're told Anwar is still in the hospital and currently undergoing some tests.