Around 500 Taliban prisoners escaped overnight from southern Afghanistan's Kandahar jail in a daring breakout the second from the prison in the past three years.
Here is a list of the most high-profile security breaches in Afghanistan since the start of the war in 2001:
September 2002: Afghan President Hamid Karzai escapes an assassination attempt when his car is fired on in the southern province of Kandahar.
January 2008: Eight people die in an attack on Kabul's five-star Serena Hotel while a delegation of Norwegian officials, including the country's foreign minister, is staying there.
April 2008: Karzai escapes unhurt as militants fire guns and rockets at a military parade he is attending.
June 2008: Around 1,000 prisoners escape from a Kandahar jail when the Taliban use a truck bomb to blow open the gates.
July 2008: A total of 41 people are killed and scores injured when a suicide bomber rams an explosive-laden car into the Indian Embassy in Kabul. The dead include the embassy's military attache and a political counsellor.
February 2009: At least 26 people die in near-simultaneous attacks on the buildings of the prisons directorate and justice and education ministries in Kabul, claimed by the Taliban.
October 2009: At least 17 people die in an attack outside the Indian Embassy in Kabul, just over a year after a much bigger bombing at the same location.
December 2009: Seven CIA operatives are among eight people killed in a suicide attack at their base in Khost, eastern Afghanistan, carried out by a Jordanian triple agent who had been escorted on site.
18 April 2011: Three soldiers are killed when an insurgent dressed in Afghan army uniform opens fire inside the Defence Ministry but is killed before detonating his suicide vest.