Q&A: Lockerbie bomber release row

Abdelbaset Ali al-Megrahi was released from a Scottish jail in August last year

Prime Minister David Cameron is to meet US senators over their allegations that BP lobbied for the release of the Lockerbie bomber.

Q. What was Lockerbie?

Q. Who is al-Megrahi and what was he convicted of?

Q. When was he released?

Q. Who authorised his release and what was their given reason?

Q. What is his state of health now?

Q. What are US senators asking?

Q. Why is it claimed the oil firm would do this?

Q. Why has this come up now?

Q. What deal was done with Libya in 2007?

Q. What was the prisoner transfer agreement?

Q. Was Megrahi part of this?