Nepalese earthquake victims collect belongings from a temporary shelter after the Hanumente River overflowed following monsoon rain in Bhaktapur on the outskirts of Kathmandu.

AFP/Kathmandu

Landslides triggered by heavy rainfall killed at least five people in central Nepal, four of them in a shelter for survivors of a devastating earthquake, police said on Friday.

Rescuers in Nepal's Nuwakot district are still searching for a nine-year-old boy missing since an overnight landslide crushed two bamboo and tin shelters built for families displaced by the April 25 quake.

"The landslide occurred around 2am, burying the shelters while the victims were sleeping inside," said district police chief Siddhi Bikram Shah.

"We have recovered four bodies and have been searching for the missing boy since early morning," Shah told AFP.

Six quake victims injured in the accident have been taken to hospitals in Nuwakot and neighbouring Kathmandu for treatment, he said.

In a separate incident, an 80-year-old woman died when a landslide slammed into her house in Nuwakot, he said.

Scores of people die from flooding and mudslides during the annual monsoon season in Nepal.

Experts warn that the Himalayan nation could see more landslides this year after the 7.8-magnitude quake.

Heavy rainfall is also hampering delivery of relief supplies to mountainous villages reeling from April's massive earthquake, which killed nearly 8,900 people and destroyed some 600,000 homes.

More than three dozen people lost their lives last month in multiple landslides in western and southern Nepal, including a student who died when mud and rocks buried his school.

Another 35 people were killed in June when a landslide smashed into villages in northeast Nepal.