Associated Press quotes a police commander as saying the blast occurred in east Kabul on a main road frequented by vehicles belonging to NATO's International Security Assistance Force and the U.S.- led coalition.

In the first attack, a man rammed his car into a patrol vehicle belonging to the International Security Assistance Force (ISAF) killing the soldier and himself.

"It was a suicide attack," Mohammad Akbar, a senior commander for the area, told Reuters. "One ISAF soldier has been killed, two other ISAF along with three civilians have been wounded."

Hamida Osman of RFE/RL's Afghan Service says she was traveling to the scene of the first explosion when the car in which she was traveling was hit by the second blast. She was slightly wounded: "For security reasons we traveled aboard a Jeep vehicle from the Afghan fast reaction forces. Near to us in another vehicle a suicide car bomb exploded," Osman said.

The target of the second blast was not immediately clear.

General Mahboub Amiri, chief of the capital's rapid reaction police force, said the ISAF casualties were all German, but a spokesman for the peacekeeping force confirmed the casualties, but not the nationalities.

Later today, German Defense Minister Peter Struck said one German soldier was killed and two others injured in today's attack.

Some 12,000 International Security Assistance Force soldiers are providing security to Afghanistan's capital and its surroundings.

Two months ago, on the same road, a suicide car bomber killed more than a dozen people, most of them Afghan army officers.

(RFE/RL Afghan Service/Reuter/AP)