Suicide attackers struck two police stations in apparently coordinated attacks Saturday in northwestern Pakistan, killing a police chief and wounding four officers, authorities said. Elsewhere in the troubled region bordering Afghanistan, Pakistan's army said it killed 30 militants in an airstrike.

The violence comes as Pakistan and the U.S. appear to have made gains in the battle against al-Qaida and the Taliban. Officials confirmed earlier in the week that the No. 2 Afghan Taliban leader, Mullah Abdul Ghani Baradar, was arrested days before in the southern Pakistani city of Karachi, and that several other Taliban and Al Qaeda-linked militants were captured in a crackdown.

The suicide attacks Saturday began within minutes of each other in Mansehra district, police official Gul Zareen said.

Local police chief Khalil Khan died and two officers and two passers-by were wounded when one attacker blew himself up inside the police station in Mansehra town, he said. A second suspect fled the scene.

In the second attack, two people stormed a police station about 15 miles away in the town of Balakot, triggering a shootout that left one attacker dead. Two officers were wounded, while the second attacker fled toward nearby offices.

Islamist militants in Pakistan frequently attack the country's security forces, and are also suspected of being involved in attacks on NATO and U.S. troops across the border in Afghanistan.

However, such assaults are relatively rare in Mansehra, about 90 miles northwest of the capital, Islamabad. Pakistan dismantled militant training facilities there after the Sept. 11, 2001, attacks in the United States.

Other large swathes of Pakistan's northwest have become militant strongholds, and in some places, the Pakistani military has been waging offensives to push the extremists out.

An army statement said an airstrike Saturday hit a militant hideout in the Shawal mountains of the South Waziristan tribal region after a tip-off that insurgents were hiding there. It said 30 militants were killed but provided no further details.

The military has been trying to clear South Waziristan of Pakistani Taliban fighters since October. The region is remote, dangerous and largely restricted to outsiders, making independent confirmation of the army's statement nearly impossible.

The U.S. has used missile strikes against militant targets in South Waziristan and other segments of Pakistan's lawless tribal belt, where Al Qaeda chief Osama bin Laden and other insurgents are believed to be hiding.

One such attack in the North Waziristan tribal region Thursday apparently targeted Siraj Haqqani, a senior figure in a prominent Al Qaeda-linked network, but killed his brother, Mohammed Haqqani, and three associates instead, intelligence officials and a Taliban commander said. They all spoke on condition of anonymity because they were not authorized to speak to the media.

The arrests earlier this month of Baradar, a pair of Taliban "shadow governors" from two Afghan provinces, and several other militant suspects have raised speculation that Pakistan is now more willing to go after a group it long supported and sheltered on its soil.

Pakistan considered the Afghan Taliban as allies in its rivalry against India. The Afghan Taliban is linked to but not the same as the Pakistani Taliban. The latter have attacked the Pakistani state, one reason the Pakistani military has waged offensives against them.

The latest crackdown comes as U.S., NATO and Afghan troops fight a major offensive against militants in the Taliban stronghold of Marjah in southern Afghanistan.