The Marine Corps UH-1Y Huey was spotted near the village of Ghorthali at an altitude of 11,200 feet (3,400 m), Major General Binoj Basnet told Reuters. A team of Nepali soldiers was trying to make its way to the site, he said.
"It was found on a steep slope," Basnet said. "Based on information from the Nepali army, the site has been spotted.
"Our ground forces are going towards the site. I think there may not be any survivors. But once we receive information from the ground forces, we will be able to tell you that."
A U.S. military spokeswoman in Kathmandu said she could not confirm the discovery of the helicopter, which went missing in the Dolakha region of eastern Nepal while delivering aid to people hit by the second quake to hit the country in 17 days.
Nepal has mobilized 600 soldiers to search for the Huey, which had six Marines and two Nepali soldiers on board when it went missing after the crew was heard over the radio saying that the aircraft was experiencing a fuel problem.
Two U.S. Hueys, two MV-22B Osprey tilt-rotor planes and Nepali and Indian choppers had been involved in the search.
"We are trying to air drop our troops to the spot. It is windy," Basnet said. "About 40 ground forces are also going towards the site. It will take them up to 1-1/2 hours to reach."