US-led coalition forces arrested four suspected al-Qaida operatives in eastern Afghanistan and coalition forces and Afghan police killed or wounded 38 Taliban operatives on Saturday, officials said. The latest violence came as a senior NATO official said a major operation to crush Taliban fighters in the south was moving to a close. US-led coalition and Afghan forces attacked a compound in southern Afghanistan on Saturday, killing 20 suspected Taliban operatives, a coalition statement said. The joint force killed the suspected operatives after they attempted an ambush in the Shahidi Hassas district of southern Uruzgan province, the statement said. There were no casualities among coalition or Afghan forces, it said.