As many as 11 people were killed and six injured in an apparent tribal clash in Kunj Alizai mountains and on roads in Kurram District near Pakistan-Afghanistan border on Saturday, reported 24NewsHD TV channel.
A heavy contingent of police and security forces was rushed to the area which was conducted a probe into the deadly firing incident.
The police also shifted the injured to the hospital.
According to the police, the situation was very tense throughout the district following an armed clash between Maqbal and Tori tribes Saturday morning.
The police further added that they were taking a number of steps to protect routes and bring the situation under control across the district.
Former MNA and jirga member Pir Haider Ali Shah regretted latest incidents of violence in Kurram district, saying peace agreements between member tribes of jira already existed.
Last month, at least 46 people were killed and nearly 100 were injured in days-long violence that had erupted over a land dispute. A previous bout of clashes in July had also resulted in 49 deaths.
In September, the district administration had engaged a local jirga to facilitate negotiations between two rival tribes. The KP government has also formed a land commission to resolve land disputes.
Reporter Mohsin Shirazi