Three policemen and 11 Taliban insurgents were killed when militant carried out two attacks in southern Afghan province of Kandahar early Tuesday morning, officials said.

"Four militant wearing police uniform armed with suicide vests and weapons raided a joint checkpost of Afghan forces and international troops in Dand district, a surrounding area of provincial capital Kandahar city, at around 6 a.m. local time Tuesday," a spokesman for provincial government Jawid Faisal told Xinhua.

The Afghan policemen engaged the assailants shortly after they approached to the checkpost, killing four attackers, Faisal said, adding three policemen were killed and seven policemen were injured during clashes in the province, 450 km south of Kabul.

Earlier Tuesday, seven Taliban insurgents were killed when they launched an attack on a NATO military camp in neighboring Shah Wali Kot district, police chief of the district Padshah Khan told Xinhua.

At least 10 soldiers with the NATO-led coalition or International Security Assistance Force (ISAF) were injured in the attack at around 3:30 local time, he said.

Meanwhile, the ISAF press office in Kandahar city confirmed that one of the coalition's camp was attacked Tuesday morning but did not provide details.

Taliban insurgents have claimed responsibility for the attacks. Qari Yousuf Ahmadi, a Taliban purported spokesman, told local media that the outfit militants launched two attacks in Kandahar, killing several Afghan and foreign soldiers Tuesday morning.

Militancy has been on constant rise since Taliban launched its spring offensive on May 3 this year.

The insurgent group has warned civilians to stay away from official gatherings, military convoys and centers regarded as the legitimate targets by militants besides warning people against supporting government and foreign troops.

Kandahar, the birthplace of Taliban, has seen increasing militancy despite continued military operations there.