New Delhi/Guwahati, Nov. 4 -- A 47-year-old Indian national was killed and another 49-year-old New Zealand citizen of Indian-origin sustained injuries after two helicopters collided in mid-air while trying to land at a high-altitude helipad in Solukhumbu district of Nepal on Tuesday, officials said, adding that miscommunication between the pilots or a technical glitch may have caused the accident as they ruled out bad weather. The Civil Aviation Authorityof Nepal confirmed the casualtyin the accident that took place in the Everest region, and involved a helicopter of Fishtail Air and another from Air Dynasty Heli Service. The Indian killed in the incident has been identified as Vasanth Kumar Balaramudu, a 47-year-old resident of Chennai who was in the Fishtail Air helicopter. Shailesh Krishna Patel, the New Zealand citizen of Indian-origin, and Rabindra Pradhan, the Fishtail Air helicopter's pilot, were injured. They were airlifted to a hospital in Kathmandu. Prajjwal KC, the second pilot, sustained minor injuries. Abi Narayan Kafle, a Nepal Police spokesperson said the two injured are under treatment in Kathmandu and Balaramaramadu's body is at Lukla, the closest airstrip to the Everest Base Camp region. "It will be brought to Kathmandu after formalities are completed and then handed over to the Indian authorities," he said. The collision occurred at8.11am as both helicopters were attempting to land in Pheriche, a popular stop for climbers and tourists located at a height of 4,371 metres. According to a statement from the Civil Aviation Authority of Nepal, the helicopter operated by Air Dynasty Heli Service Pvt Ltd was on a cargo flight. The helicopter operated by Fishtail Air was carrying two foreigners. It was unclear whether Balaramaramadu and Patel were in Solukhumbu as part of some trekking expedition or were planning to climb Mount Everest. A video widely circulated on social media showed the rotor blades of one helicopter hitting the passenger compartment of the other helicopter before both crashed to the ground. "Preliminary reports suggest miscommunication between the pilots, as the area is outside the coverage of Lukla Airport's air traffic control tower," Mukesh Dangol, director general of the Civil Aviation Authority of Nepal, was quoted as saying by The Kathmandu Post. Solukhumbu's chief development officer Kaman Singh Thapa Magar said, "The weather was clear at that time. Details of how the crash took place will be known after investigation, it appears there was some technical glitch."...