BBC News - Bin Laden raid was revealed on Twitter: "The raid that killed Osama Bin Laden was revealed first on Twitter.
"An IT consultant, living in Abbottabad, unknowingly tweeted details of the US-led operation as it happened.
"Sohaib Athar wrote that a helicopter was hovering overhead shortly before the assault began and said that it might not be a Pakistani aircraft.
"He only became aware of the significance of his tweets after President Obama announced details of Bin Laden's death.
"Mr Athar's first posting on the subject came at around 1am local time (9pm BST)."