Pakistani jets targeted the Maizer area of the Datta Khail region in North Waziristan tribal district that is said to be the last stronghold of Tehreek-i-Taliban Pakistan (TTP) militants.
A security official in the area said the attacks destroyed up to four militant hideouts and killed at least 15 militants.
Later in the day, the military said in a statement that its ground forces “surrounded a group of fleeing terrorists in the Mangroti area near the Afghanistan border in the Shawal region of the North Waziristan district and 19 militants were killed during the intense exchange of fire.”
Four security forces including an officer also lost their lives in the operation, the statement added.
The strikes and clashes were confirmed by a senior military official in the city of Peshawar.
"The air strikes have increased in the last few days and we have hit targets today also. We have hit the hideouts many times during the last few days," said the security official, whose name was not mentioned in the report.