A suspected suicide car bomb has exploded near a Nato military convoy in the southern Afghan city of Kandahar, injuring at least two children, police and witnesses said.

"I can confirm there was a suicide car bomb against Nato troops," police officer Ghulam Mohammad told reporter at the scene on Sunday.

"I know two children were wounded but I don't have more information if there were more casualties," Mohammad said.

An AFP reporter saw two wounded children being rushed to hospital after the blast. It was not immediately clear if there were other casualties.

Nato's International Security Assistance Force could not immediately confirm the blast.

Foreign soldiers and their Afghan counterparts sealed off the area, the reporter said.

The explosion was near a Nato-run military outpost that used to be the home of Taliban leader Mullah Mohammad Omar, whose movement is blamed for a wave of attacks in Afghanistan.

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Afghanistan map

Al-Jazeera