Conversation so far:
What is the Salt Pit?
The Salt Pit is a black site or covert CIA interrogation center, in Afghanistan.
Are there any other interesting aspects about the Khalid El-Masri article?
While held by the CIA in Afghanistan, Khalid El-Masri was beaten, interrogated, kept in a squalid cell, and given only meager rations to eat and putrid water to drink.
When was Khalid El-Masri held by the CIA in Afghanistan?
When the Macedonian officials released Khalid El-Masri on 23 January 2004, American security officers immediately took him into custody and detained him.
Was Khalid El-Masri ever compensated for being wronglfully held by the CIA in Afghanistan?
The Grand Chamber of the European Court of Human Rights ruled that Khlaid El-Masri's account was established beyond a reasonable doubt, and awarded him 60,000 euros for his abuse.
When was Khalid El-Masri released from the CIA in Afghanistan?
Khalid El-Masri was released in 2006.
What happened after Khalid El-Masri was transferred from Macedonia to Afghanistan by the CIA?
After being transferred to Afghanistan, Khalid El-Masri was taken to the Salt Pit, a black site or covert CIA interrogation center.
When was Khalid El-Masri transferred to Afghanistan?
When the Macedonian officials released Khalid El-Masri on 23 January 2004, American security officers immediately took him into custody and detained him, taking him to Afghanistan.

Question: Who did the interrogation?
Self-contained rewrite: Who did the interrogation after Khalid El-Masri was detained?