ISLAMABAD, Jan 21 (Reuters) - Following are security developments in Pakistan at 1050 GMT on Friday.
* denotes new or updated developments
* SOUTH WAZIRISTAN - Pakistani troops killed four militants and wounded seven on Friday, after the insurgents attacked a security checkpoint in South Waziristan near the Afghan border, local intelligence officials said.
There was no independent verification of the attack and militants often dispute official accounts.
* QUETTA - Gunmen in Pakistan's southwestern Baluchistan province set fire on Friday to three tankers carrying fuel for NATO troops in Afghanistan, officials said.
In a separate attack, gunmen on a motorbike shot and wounded the driver of a NATO truck in Baluchistan's Khuzdar district, about 270 km (167.8 miles) south of the provincial capital Quetta, senior police official Ghulam Rasool said. Suspected militants frequently attack NATO trucks and containers in an effort to choke supplies for foreign troops battling Taliban militants in Afghanistan.
(Compiled by Augustine Anthony; Editing by Rebecca Conway)
(E-mail: augustine.anthony@thomsonreuters.com; Reuters Messaging: augustine.anthony@thomsonreuters.com; Islamabad newsroom: +92 51 281 0017))
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