NATO aircraft attacked Taliban in southern Afghanistan and killed 16 insurgents and 13 civilians, Afghan police said on Friday, but NATO denied causing civilian casualties, Reuters reported. The attack in Garmser district of Helmand province on Thursday came hours after a separate incident in which NATO said its troops and Afghan forces killed up to 150 insurgents infiltrating from Pakistan. The chief of police in Helmand, Mohammand Nabi Mullahkhail, said 16 Taliban and 13 civilians had been killed in a NATO air strike in the remote district where British troops have been fighting Taliban for months. But a spokeswoman for the 32,000-strong NATO force said on Friday there was no evidence of any civilian casualties. "Our intelligence suggests all casualties are Taliban," the spokeswoman said.