People rest in a hospital after being injured in a suicide bombing near Kandahar city, south of Kabul, on Wednesday, Jan. 13, 2010. (Allauddin Khan/Associated Press)

Two U.S. soldiers and four Afghan policemen were killed in separate explosions Wednesday in eastern Afghanistan as militants hit at international and Afghan forces at multiple locations across the country.

NATO said the two American troops died in a bomb blast but it did not disclose any additional information.

And in Khost city, four members of the Afghan National Police and one civilian died while trying to remove an explosive just outside the police barracks.

In two other incidents Wednesday, nine other Afghan policeman and three civilians were injured.

In Ghanzi province in eastern Afghanistan, six Afghan policeman were hurt when a remote-controlled bomb exploded near an international aid office, said provincial deputy police chief Abdul Ghani.

And in the Daman district of Kandahar province in southern Afghanistan, three police officers and three civilians were wounded when a suicide bomber in a truck detonated explosives near a police office.

Soldier's body found

The Afghan Ministry of Defence also reported that the body of an Afghan National Army soldier kidnapped on Monday in Baghlan province was found Tuesday in northern Afghanistan. The soldier had been stationed in Khost District.

The deaths of the U.S. soldiers raises the total number of NATO coalition troops killed to 28 in January.

A total of 520 coalition soldiers died in Afghanistan while fighting Taliban and al-Qaeda militants in 2009, the deadliest year for the coalition in the nine years since the UN-mandated International Security Assistance Force began to assist Afghan authorities.

Many of the casualties came as a result of roadside bombs and other improvised explosives.

NATO also reported Wednesday that Afghan and international forces patrolling Helmand province on Jan. 10 uncovered a cache of explosives and bomb-making equipment, including 113 kilograms of homemade explosives and 16 kilograms of nitrate-based fertilizer.

With fiels from The Associated Press