Who's the mystery witness in the Rutgers trial?

Mystery is swirling around a witness in the Rutgers roommate trial.

Dharun Ravi is on trial for using a webcam to spy on his college roommate Tyler Clementi while Clementi had a sexual encounter with a man. 

Read more: Rutgers case

Ravi’s friend, Molly Wei, saw Clementi’s sexual encounter with M.B. She testified that she saw both men kissing with their shirts off. Clementi committed suicide shortly after the incident.

The man who was with Clementi is known only as M.B. in court documents. He is expected to testify in this trial, but don’t expect to find out who he is.

The judge wants M.B.’s identity protected so the media isn’t allowed to show M.B.’s face or let you hear his voice. He will be sworn in by just his initials, so even people in the courtroom who can see and hear him won’t know his name.

Here is what we do know about M.B.:

• He is a man.
• He is either in his 20s or 30s. Witnesses have testified that he appeared to be in his 30s when he visited Clementi at the dorm in September 2010.
• Witnesses have also testified that he appeared “shady” or “suspicious looking.”
• There has been speculation that M.B. is married and that’s why he wants his identity kept secret. His attorney, Richard Pompelio, says he doesn’t believe his client is married, or in a serious relationship.

READ MORE:  In Session's Jean Casarez interviews Pompelio about his client's role in the trial

In Session and HLN are respecting the wishes of the court. If M.B.’s identity is released by other media outlets, In Session and HLN will not republish or rebroadcast his identity.