Khalid Sheikh Mohammed is thought to be the man who masterminded the attacks on 11 September. His capture in Pakistan was seen as a key success in the US fight to counter al-Qaeda. BBC News Online presents key video reports following the arrest.
Top al-Qaeda suspect seized
Khalid Sheikh Mohammed photographed shortly after his arrest
Khalid Sheikh Mohammed, one of the top aides in Osama Bin Laden's al-Qaeda network, has been captured in Pakistan.
He was arrested with two other men in a pre-dawn raid in the city of Rawalpindi, near the capital Islamabad.