PESHAWAR: At least two security personnel were injured in a gun and rocket attack from Afghan security forces in South Waziristan tribal agency on Wednesday, said a statement by the Inter-Services Public Relations (ISPR).

According to the ISPR, Afghan security forces early on Wednesday morning fired an RPG-7 rocket and few rounds of small arms at a security checkpost in the Angoor Adda area of South Waziristan.

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Pakistani troops retaliated and targeted positions where the fire was coming from, said the ISPR statement.

Earlier reports had suggested that six security personnel were injured due to the firing, however a statement from ISPR confirmed the number was two.

Tensions have been rising along the border of Khyber Agency and South Waziristan tribal region over the last few days, say official security sources.

Reports of rising tensions come as the Taliban step up attacks in Afghanistan as a part of their annual offensive.

An Inter-Services Intelligence officer was accused of involvement in a Taliban attack targeting the Afghan parliament building on June 22, an allegation categorically denied by Foreign Office spokesman Qazi Khalilullah.

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The cross-border firing incident comes as operations Zarb-i-Azb and Khyber II ─ targeting militancy in the sensitive tribal region of Waziristan ─ have reached their final phases.