(CNN) -- Fighting raged Tuesday between security forces and militants in northwestern Pakistan, leaving 43 militants dead and two commanders captured, authorities said.
The deaths came as a result of a military operation in Bara, in the Khyber Agency of northwestern Pakistan, according to the agency's Office of Political Administration.
43 other militants were detained, including at least two important militant commanders, the office said.
Meanwhile, 105 militants -- including five notorious area commanders -- surrendered Tuesday to Pakistani authorities in Kanju, in Pakistan's volatile Swat Valley, the Pakistani military announced.
As a result of the surrender, the army was able to seize arms and weapons including AK-47s, machine guns, and mortars, the military said.
Security forces in other areas of the Swat Valley on Tuesday apprehended 19 people, whom they described as terrorists, and recovered a cache of arms and ammunition, the military said.
A local terrorist commander surrendered to security forces near the town of Sakhra, and a separate search operation led to two militants being killed, the military said.
Military sources said Monday that 29 militants had been killed as a result of search operations in the Charbagh area of the Swat Valley, which lies in the country's north.