Salim

Salim was an inmate at the detention center in Washington D.C. during Day 6.

Day 6
Salim was in the same line as Walid Al-Rezani when being interred into the detention center. Walid defended him when he refused to obey the FBI agents.

Salim later thanked Walid and began to carry a conversation with another inmate in Arabic. Walid coveyed the message to Sandra Palmer who later relayed it to CTU.

The message proved that Salim had some knowledge of the attacks, and so Walid agreed to wear a wire to find out what else he knew.