ASSADABAD- Hizb-e-Isami Afghanistan said today that its fighters had shot down an American spy aircraft in Kunar province.The drone aircraft was flying over Kunar's Shegal district when hit by the Hizb's fighters, the group spokesman, Haroon Zarghoon told sources by phone. He said the US drones are routinely fly over the border regions and also carry out strikes on the positions of the armed resistance groups. There was no comment from the ISAF forces in Afghanistan.Meanwhile, provincial police chief Abdul Habib Sayedkhili said an unmanned plane crashed in the eastern Kunar province with Assadabad as its capital 185 km east of Kabul on today. "A pilot-less plane was crashed in Wani area of Shigal district at 05:00 a.m. local time today but caused no loss of life and property," Sayedkhili said.Taliban militants have claimed of responsibility for shooting down the unmanned plane. However, Sayedkhili rejected Taliban claim as groundless, saying the unmanned plane has crashed due to technical problems. The mountainous Kunar province bordering Pakistan's tribal areas has been the scene of Taliban militants' activities over the past couple of years.