KANDAHAR (Reuters) – Afghan border police mistook a group of villagers gathering wood near the Pakistan border as insurgents and opened fire, killing seven civilians, a police official said Saturday.

All six officers involved in Friday's pre-dawn shooting have been arrested and the incident is under investigation, said Gen. Abdul Raziq, the commander of the border police of southern Afghanistan.
The Afghan-Pakistan border area is a common transit route for both Taliban militants and smugglers, and border police regularly are attacked in the area.
In neighboring Helmand province, NATO and Afghan forces clashed with insurgents in Musa Qaleh district. The forces came under fire from militants Friday and killed three when they retaliated, NATO said in a statement.
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