Afghan officials say an unmanned aerial vehicle belonging to US - led forces in the country has crashed in the eastern province of Wardak.Attaullah Khogyani, the spokesman for Wardak governor, said on Wednesday that the overnight crash in the Nirkh District of the Maidan Wardak province was caused by a technical problem. This is while, the Taliban militant group has claimed to have shot down the drone. Washington has increasingly turned to unmanned aircraft to carry out covert strikes in several countries, such as Afghanistan, Pakistan, Yemen, and Somalia. US claims that its airstrikes target militants, but local sources say civilians have been the main victims of the attacks. The United States and its allies invaded Afghanistan in October 2001 as part of Washington’s so-called war on terror. The offensive removed the Taliban from power, but insecurity continues to rise across the country, despite the presence of thousands of US-led troops. According to the United Nations, thousands of Afghan civilians have died and hundreds of thousands more displaced during more than 11 years of long war.