A spokesman for the U.S. embassy in Afghanistan says an American citizen has been killed and another wounded in a shooting incident at a compound used by the U.S. Central Intelligence Agency .

The spokesman ((Gavin Sundwall) said Monday an Afghan employee of the U.S. government carried out the attack late Sunday, and that the attacker was killed. Officials did not give a motive for the shooting, and there has been no immediate claim of responsibility.

The wounded U.S. citizen was taken to a hospital with non-life-threatening injuries.

The incident comes less than two weeks after militants launched a coordinated assault on several high-profile targets in the capital, including the U.S. embassy and NATO headquarters. Nine people were killed in a nearly day-long siege.

In another attack Sunday, a suicide bomber blew himself up outside a local police headquarter in eastern Paktika province, killing two policemen and wounding two civilians.