PESHAWAR: Security forces killed 26 militants in the northwestern Pakistani region of Upper Dir.

Police official Bahadur Khan said the insurgents were targeted Saturday when they invaded from Afghanistan's Kunar province and opened fire on troops in the Nustrat Darra district.

He said the troops suffered no casualties in the latest fighting.

The situation has been tense in Upper Dir since Wednesday, when about 400 insurgents attacked a security post and killed 25 personnel.

Khan said security forces have killed about 100 insurgents since then and the situation was under control.