Afghan Soldier Opens Fire on Coalition Soldiers, NATO Says KABUL, Afghanistan - An Afghan soldier opened fire on NATO soldiers, wounding five of them before fleeing, in the latest in a spate of attacks by Afghan soldiers and police officers on their coalition allies, Western and Afghan officials said Wednesday. NATO officials confirmed the shooting, which they said took place on Tuesday afternoon in Wardak Province to the west of the capital, Kabul. In line with the military coalition's policy, the officials would not give details on the nationality of the wounded soldiers, but Afghan officials said they were American. Shahidullah Shahid, spokesman for the governor of Wardak, said the Afghan soldier entered a small NATO base near a village in the Sayed Abad district of Wardak before turning his gun on the American soldiers. The latest attack comes only two days after three British soldiers were killed by a member of the Afghan police force in southern Helmand Province. Afghan soldiers and police officers have attacked American and other coalition counterparts with rising frequency even as the international forces, preparing for an accelerated withdrawal, have been training them to fight on their own. Afghan police officers or soldiers have so far killed 26 coalition service members this year, compared with 35 in all of 2011, according to the coalition. NATO officials blame tensions arising from cultural and other personal differences, not Taliban infiltration, for most of the shootings. A Wardak official who spoke on the condition of anonymity because he was not authorized to speak on the matter said the Afghan soldier was a member of the Afghan National Army and was from Kunduz Province. An employee of The New York Times contributed reporting.