ISLAMABAD – Pakistani troops were, Wednesday, locked in deadly street battles with Taliban fighters, pushing a ground offensive deeper into militant-held territory, the military said.

A senior military official told AFP the army had "taken" the strategic town of Sararogha in the third week of fighting, while 30 Islamist insurgents were reported killed in the last 24 hours.

Pakistan has vowed to quash Tehreek-e-Taliban in South Waziristan, part of the border area with Afghanistan that Washington calls the most dangerous place in the world because of the abundance of Al-Qaeda and Taliban fighters.

Sararogha shot to infamy within the tribal belt as the operational centre of former Tehreek-e-Taliban warlord Baitullah Mehsud, who was killed in a US drone attack in August.

The military provides the only regular information coming from the frontlines. None of the details can be verified because communication lines are down and journalists and aid workers barred from the area.

Pakistan launched its fierce air and ground offensive into the northwest region on October 17, with some 30,000 troops backed by fighter jets and helicopter gunship laying siege to Tehreek-e-Taliban bolt-holes.

"Today, security forces entered into the important stronghold of terrorists, the town of Ladha. Intense fighting is taking place in (the) streets," the military said in its daily update.

It said "security forces have cleared a major part" of Sararogha, but a senior official in northwest Pakistan said the town had been captured.

So far, the military has claimed to have killed more than 390 militants since the operation began, with 45 troops losing their lives.

The long-anticipated assault into South Waziristan came after a spring offensive in and around the northwestern Swat valley, which the government declared a success in July. However, sporadic outbreaks of violence continue.