Mirali: A senior army officer and five militants were killed, during an attack on a checkpost in Spin Wam area of North Waziristan tribal region's Mirali tehsil, security, according to sources today.

Militants attacked a security checkpost situated in Kaka Ziarat area of Spin Wam near the Pak-Afghan border, killing a major rank officer of the Pakistan Army. Security personnel resorted to retaliatory firing killing five militants.

North Waziristan is one of the seven regions in Pakistan's Federally Administered Tribal Areas (Fata) governed by tribal laws, which is situated along the Pak-Afghan border and is rife with Taliban militant activity.

The Pakistan Army launched Zarb-i-Azb, a comprehensive operation in North Waziristan tribal region last summer to drive out Tehreek-i-Taliban Pakistan (TTP) and other extremist militants, who launch attacks on government and civilian targets, a week after the brazen insurgent attack on the country's busiest airport in Karachi.