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U.S. Marine helicopter missing as Nepal hit by 2nd quake

A 7.3 earthquake struck Nepal weeks after it was hit by a major earthquake last month
Second major earthquake hits Nepal 02:31

KATHMANDU, Nepal -- A U.S. military helicopter carrying six Marines and two Nepalese Army soldiers went missing during a mission in Nepal delivering aid to earthquake victims, U.S. defense officials said Tuesday, but so far there have been no indications that the aircraft crashed.

The helicopter's disappearance comes as a new earthquake killed dozens of people Tuesday and spread more fear and misery in Nepal, which is still struggling to recover from a devastating quake nearly three weeks ago that left more than 8,000 dead.

U.S. Marine helicopter missing in Nepal 00:48

U.S. Army Col. Steve Warren said an Indian helicopter in the air nearby at the time heard radio chatter about a possible fuel problem. He said the Huey had dropped off supplies in one location and was en route to a second site when contact was lost. He said officials are hopeful that the aircraft is simply missing because there has been no smoke or other signs of a crash.

Navy Capt. Chris Sims says the Huey was conducting disaster relief operations near Charikot, Nepal, on Tuesday, around 9 a.m. EDT.

The helicopter had just dropped off a load of supplies at Charikot and was headed toward a second site when it reported the problem, CBS News national security correspondent David Martin reports.

Warren said other U.S. aircraft had searched the area, but because it's now dark, members of the Nepalese military are conducting the search on foot. He said they are moving toward the second aid location to see if the helicopter landed near there.

The aircraft is part of Marine Light Attack Helicopter Squadron 469, and the incident is under investigation.

There are about 300 U.S. troops in Nepal assisting with the rescue mission, using a variety of aircraft including three Hueys, four Ospreys and several cargo planes.

Another deadly earthquake shakes Nepal 01:50

Tuesday's magnitude-7.3 quake, centered midway between Kathmandu and Mount Everest, struck hardest in the foothills of the Himalayas, triggering some landslides, but it also shook the capital badly, sending thousands of terrified people into the streets.

Nepal's Parliament was in session when the quake hit, and frightened lawmakers ran for the exits as the building shook and the lights flickered out.

At least 37 people were killed in the quake and more than 1,100 were injured, according to the Home Ministry. But that toll was expected to rise as reports began reaching Kathmandu of people in isolated Himalayan towns and villages being buried under rubble, according to the U.N.'s Office for the Coordination of Humanitarian Affairs.

Tremors radiated across parts of Asia. In neighboring India, at least 16 people were confirmed dead after rooftops or walls collapsed onto them, according to India's Home Ministry. Chinese media reported one death in Tibet.

The magnitude-7.8 earthquake that hit April 25 killed more than 8,150 and flattened entire villages, leaving hundreds of thousands homeless in the country's worst-recorded quake since 1934. The U.S. Geological Survey said Tuesday's earthquake was the largest aftershock to date of that destructive quake.

Tuesday's temblor was deeper, however, coming from a depth of 11.5 miles versus the earlier one at 9.3 miles. Shallow earthquakes tend to cause more damage.

At least three people were rescued Tuesday in Kathmandu, while another nine pulled to safety in the district of Dolkha, the government said.

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Nepalese Army work to try to dig up a little boy believed to be in the rubble of a house that collapsed following a second major earthquake May 12, 2015 in Kathmandu, Nepal. Jonas Gratzer, Getty Images

Rescue helicopters were sent to mountain districts where landslides and collapsed buildings may have buried people, the government said. Home Ministry official Laxmi Dhakal said the Sindhupalchowk and Dolkha districts were the worst hit.

Search parties fanned out to look for survivors in the wreckage of collapsed buildings in Sindhupalchowk's town of Chautara, which had become a hub for humanitarian aid after last month's quake.

Impoverished Nepal appealed for billions of dollars in aid from foreign nations, as well as medical experts to treat the wounded and helicopters to ferry food and temporary shelters to hundreds of thousands left homeless amid unseasonal rains.

Tuesday's quake was followed closely by at least 10 strong aftershocks, according to the USGS.

Early reports indicated at least two buildings had collapsed in Kathmandu, though at least one had been unoccupied due to damage it sustained on April 25. Experts say the earlier quake caused extensive structural damage even in buildings that did not topple, and that many could be in danger of collapse.

Frightened residents in the capital, who had returned to their homes only a few days ago, once again set up tents Tuesday night with plans to sleep in empty fields, parking lots and on sidewalks.

"Everyone was saying the earthquakes are over. ... Now I don't want to believe anyone," said 40-year-old produce vendor Ram Hari Sah as he searched for a spot to pitch the orange tarpaulin to shelter his family. "We are all scared, we are terrified. I would rather deal with mosquitoes and the rain than sleep in the house."

Extra police were sent to patrol ad-hoc camping areas, while drinking water and extra tents were being provided, according to Kathmandu administrator Ek Narayan Aryal.

"I thought I was going to die this time," said Sulav Singh, who rushed with his daughter into a street in the suburban neighborhood of Thapathali. "Things were just getting back to normal, and we get this one."

Paul Dillon, a spokesman with the International Organization for Migration, said he saw a man in Kathmandu who had apparently run from the shower with shampoo covering his head. "He was sitting on the ground, crying," Dillon said.

Meanwhile, new landslides blocked mountain roads in the district of Gorkha, one of the regions hit hardest on April 25, while previously damaged buildings collapsed with the latest quake.

Residents of the small town of Namche Bazaar, about 35 miles from the epicenter of Tuesday's quake and well known to high-altitude trekkers, said a couple of buildings damaged earlier had collapsed there as well. However, there were no reports of deaths or injuries.

The earth also shook strongly in neighboring Tibet, unleashing a landslide that killed one person and injured three, according to China Central Television. Two houses collapsed, the state broadcaster said, quoting disaster officials of the regional Tibetan government.

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