A helicopter of NATO-led troops crashed in Helmand province in southern Afghanistan on Tuesday, an official said. 'The helicopter due to technical problems crashed in Gereshk district at 04:00 a.m. local time, as a result one soldier sustained injury,' spokesman for provincial administration Daud Ahmadi told Xinhua. Meanwhile, a NATO source with press department in southern region confirmed the incident, saying it was a hard landing and all four aboard were rescued safe and sound. On the other hand, a Taliban spokesman Qari Yusuf Ahmadi told media via telephone the militants shot down the chopper and all aboard were killed, a claim rejected by Daud Ahmadi as mere propaganda. 