Press TV reports.
The incident occurred when dozens of militants armed with automatic weaponry attacked a military checkpoint in upper Dir tribal district from the other side of the border in Afghanistan, killing at least six Pakistani soldiers and wounding eight more.
In retaliation, Pakistani security forces managed to kill at least 11 Taliban militants and injure 12 others.
Several soldiers have reportedly gone missing after the attack.
Tahirk-e-Taliban militant group has claimed responsibility for the offensive.
The recent violence came a day after an attack by unknown gunmen in southwestern Balochistan province left at least eight people killed.
Thousands of Pakistanis have lost their lives in bombings and other militant attacks since 2001 when Pakistan joined an alliance with the United States in the so-called war against terrorism.
The US-led war on terror has neither uprooted Taliban militancy nor made Afghanistan and Pakistan more secure places for their people.
Afghan and Pakistan Taliban have maintained power in volatile regions of both states, despite the US administration’s claims that insurgency has been weakened in both countries.
At least 17 people have been killed in violent clashes between Pakistani security forces and Taliban militants in a tribal region near Afghan border,