NATO officials say alliance troops have killed at least 48 suspected Taleban rebels and several civilians in three separate clashes in southern Afghanistan.

The alliance said Wednesday four civilians were also wounded in the clashes in Kandahar's Zhari and Panjwayi districts Tuesday.

A NATO spokesman says the alliance is looking into "credible reports" of civilian deaths during at least one of the clashes. He says the alliance deeply regrets any civilian casualties.

Earlier, NATO officials said Afghan police and NATO-led troops seized more than nine tons of hashish from a truck traveling in southern Afghanistan.

Alliance officials say security forces found the drugs while searching the truck at a checkpoint in Zabul province. The troops arrested the driver and three passengers.

Afghan officials say Taleban-led militants are fueling the drug trade because it helps fund the rebellion.

Some information for this report was provided by AFP, AP and Reuters.