Afghan security forces backed by NATO-led troops during an operation eliminated a dozen Taliban militants including a group commander Mullah Razaq Friday night in the country's northern Kunduz province, spokesman with NATO-led troops in Kunduz province Lieutenant Colonel Webber said Saturday.

"The operation conducted last night in Gortapa area during which 12 militants including their commander Mullah Razaq were killed," Webber told Xinhua.

There were no casualties on the troops nor on civilians, he stressed.

Meantime, a local security official who declined to be identified said that gun battle with militants in Chardara district of Kunduz province left 10 insurgents dead on the same day Friday.

Kunduz, a relatively peaceful province, until last year has been the scene of increasing militancy since beginning this year.

Taliban militants have vowed to intensify their activities this year in Afghanistan.