An explosion in Afghanistan targeted a convoy of foreign troops in the capital, Kabul, on Sunday, a security official said.

Gen. Abdul Rahman Rahimi, the Kabul city police chief, said that three Afghan civilians were wounded in the attack. There were no fatalities.

The blast targeted two armored vehicles belonging to foreign forces attached to the NATO Resolute Support Mission, he said. One of the vehicles was damaged.

While Rahimi and a Taliban spokesman said the convoy was attacked by a suicide car bomber, U.S. Army Col. Brian Tribus, the spokesman in Afghanistan for U.S. and NATO forces, said it was a roadside bomb. The discrepancy could not immediately be reconciled.

The Interior Ministry said in a statement that the three casualties suffered minor wounds only. Surrounding buildings were partially damaged, it added.

The Taliban claimed responsibility for the Kabul attack. Taliban spokesman Zabihullah Mujahid said in a statement emailed to media that their suicide bomber had targeted a convoy of foreigners.

There have been a number of attacks in the capital in recent weeks, including on Oct. 6 targeting the house of former Helmand governor Nahim Baloch.

After an all-night battle, 10 people were wounded, including three civilians and seven members of the Afghan security forces. Officials said Baloch was not at home at the time.

The Taliban have been active across the country this year, most recently storming the northern city of Kunduz and holding it for three days before largely retreating in the face of a government counter-offensive.

Officials in Kunduz say troops are still working to clear insurgents from pockets within the city. The humanitarian situation in Kunduz is deteriorating as access to food and other supplies is limited.