Peshawar, Jan 18 : At least 90 militants have been killed and four soldiers injured in separate clashes that took place in Chagmalai and Ladha Fort as security forces and militants engage in battles across the South Waziristan tribal area along the Afghanistan border.

Military spokesman Major General Athar Abbas has confirmed the incident, saying that the militants attacked the security personnel in the area lying between Wana Road and Ladha Fort.

The clashes came two days after hundreds of militants overran a paramilitary fort in another part of South Waziristan.

In one operation the army attacked a large number of militants who had gathered to attack another attack fort in the region, at Ladha, killing up to 60 of them, Abbas said.

Security forces used artillery and mortars and there were no casualties on the government side, The News quoted him, as saying.

In the second incident, militants ambushed a military convoy but suffered upto 30 casualties when security forces fought back, he said.

Four security personnel were injured in two separate clashes between security forces and militants while two vehicles were also damaged. (ANI)