A suicide bomb exploded near a NATO-led military convoy in Afghanistan's main southern city of Kandahar on Wednesday, but there was no word on casualties, police said.
"There was a suicide bombing against a NATO convoy in Kandahar city," provincial police chief Esmatullah Alizai said.
"There is no immediate information on casualties."
Kandahar, the heartland of the Taliban before their ouster in late 2001 by a US-led invasion, is one of the most violent regions in insurgency-hit southern Afghanistan.
Thousands of foreign troops, mainly from the NATO-led International Security Assistance Force, are based in Kandahar.