At least four soldiers and nine militants were killed today after insurgents attacked a security post in Pakistan's restive tribal region where a massive army operation is underway against the Taliban.
Militants attacked the security outpost in South Waziristan which led to a clash.
Army said four soldiers were killed in the attack forcing the army to retaliate, killing nine militants.
The army also launched a search operation in the area.
South Waziristan was cleared in a military operation in 2009 but still rebels are active in its border areas.
After the operation in neighbouring North Waziristan, the militants are hard pressed from the two sides.
Army has also moved ahead to clear the Shawal valley which overlaps both South and North Waziristan and links these two districts to Afghanistan.
More than 2,800 militants have been killed since the launch of the operation last June.
