NATO said they arrested a man  based in Pakistan who was a former associate of bin Laden, who was killed in a U.S. raid in Pakistan on May 2. NATO also said the captured man may have been with the al-Qaida leader in 2001.

NATO did not release the detainee's name or other details, except to say he was captured Wednesday during an operation in Nahri Shahi in northern Balkh province.

NATO said he is one of several senior al-Qaida and Taliban insurgents captured in the province since February. It said a total of 35 people associated with al-Qaida and the Taliban have been captured in Balkh during that period.

Also Thursday, insurgents attacked a road construction company working on a highway in the southern province of Uruzgan, killing two security guards and a police officer, said Milad Ahmad Mudasir, the governor's spokesman. NATO troops attacked the insurgents and killed a Taliban shadow governor in the province, as well as arresting two other Taliban commanders, Mudasir said.

In the north, the German army said one of its soldiers was killed and five others were wounded in a bomb attack in the province of Baghlan.

A spokesman for the Bundeswehr Operations Command in Potsdam, Germany, said the attack on the German soldiers took place Thursday morning about 22 miles (35 kilometers) south of the city of Kunduz.

The spokesman, who was speaking on condition of anonymity in line with department policy, said the soldiers were in a German Marder tank when they were attacked.

The soldiers were taken to a German base in Kunduz by helicopter. It was not clear how severely injured the wounded were or who was behind the attack.

German Defense Minister Thomas de Maiziere said Thursday afternoon in Dresden that the "accumulation of attacks worries us ... but we will not reduce our engagement" in Afghanistan.

A Polish soldier also died in combat Thursday in an insurgent attack that left two others injured in Ghazni province, Poland's military said.