An Indian Air Force (IAF) helicopter, Mi-17, crash-landed at Mana village of Chamoli district in Uttarakandh, today. The chopper was carrying 15 persons including crew members. They were all injured due to the crash. Police sources said that the chopper crash-landed on Thastoli helipad near Mana. Primary reports suggested that the crash landing was due to a technical snag, police added.