A suicide car bomber attacked a Nato convoy near the new parliament building in the Afghan capital today, police and the coalition said, the first attack in Kabul in three months after security was increased.
Police said an Afghan soldier and one member of the Nato-led International Security Assistance Force (ISAF) were wounded in the attack on the city's outskirts, although ISAF did not confirm one of its troops had been hurt.
Afghan authorities clamped a "ring of steel" across the city before parliamentary elections in mid-September, with checkpoints manned by armed police still in place across parts of Kabul.
While the capital has been relatively quiet, violence across the rest of Afghanistan has reached its worst level since the Taliban were overthrown by US-backed Afghan forces in 2001.
Civilian and military casualties are at record levels, despite the presence of about 150,000 foreign troops.
Afghanistan will top the agenda at a Nato summit in Lisbon next week. Washington will also review its Afghanistan strategy in December amid sagging support for the drawn-out conflict.
A police source said today's attack had been carried out by a suicide car bomber. ISAF described the attack as a "vehicle-borne improvised explosive device."
Witnesses said the mangled remains of the car used in the bombing lay in the middle of the main road near the new parliament on Kabul's outskirts, with debris strewn over a wide area.
A damaged ISAF Humvee vehicle was pulled off to the side. An ISAF base is near the site of the blast.
The Taliban had vowed to disrupt the September 18th vote but the ballot went ahead, although attacks were reported across the country on polling day and 17 people were killed. One rocket fired by insurgents landed in Kabul in the pre-dawn hours of election day but caused no major damage or injuries.
The last serious attack in Kabul was on August 10th, when two suicide bombers killed up to five Afghans in a residential area of central Kabul. One of the suicide bombers blew himself up at the gate of a compound used by foreigners.
Tomorrow is the ninth anniversary of the fall of the Taliban regime in Kabul.