An Afghan employee has killed one US citizen and wounded another before being shot dead at a compound believed to house a CIA station, officials say. The incident in Kabul took place on Sunday night at the facility, previously known as the Ariana hotel.

On May 6, a Central Intelligence Agency drone fired a volley of missiles at a pickup truck carrying nine militants and bomb materials through a desolate stretch of Pakistan near the Afghan border. It killed all the militants - a clean strike with no civilian casualties, extending what is now a yearlong perfect record of avoiding collateral deaths.

Ahmad Wali Karzai, the half-brother of the Afghan president, lived under constant fear of assassination. His death last week was the latest of 10 attempts to kill him. The seventh bomb to target me was so big that hundreds of cats fed on human flesh for days afterwards, he told me last July. The man who finally killed Karzai was someone he trusted with his life. Not only was Sardar Mohammed a close confidant, but he also worked as an informant for the CIA, according to relatives, Karzai s friends and the Afghan intelligence agency.

The CIA has relied on Lilley, part of a constellation of agency bases across Afghanistan, as a hub to train and deploy a well-armed 3,000-member Afghan paramilitary force collectively known as Counterterrorism Pursuit Teams. In addition to being used for surveillance, raids and combat operations in Afghanistan, the teams are crucial to the United States' secret war in Pakistan, according to current and former U.S. officials.

KABUL, Afghanistan - The aide to President Hamid Karzai of Afghanistan at the center of a politically sensitive corruption investigation is being paid by the Central Intelligence Agency, according to Afghan and American officials.