At least four people were killed when a roadside bomb hit a convoy of security forces in northwestern Pakistan's tribal region on Saturday, local TV channel reported.
The roadside bomb hit the convoy in Wana, main town of the South Waziristan tribal agency, which also injured three people, Dawn News TV said.
The attack came hours after an explosive-laden car hit another security convoy in the North Waziristan tribal agency, killing two soldiers and four civilians.
No group claimed responsibility for the two attacks, but there are speculations that local Taliban is behind the attacks in the two neighboring tribal agencies.
Source: Xinhua
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