The death toll in the landslide at a railway construction site in Manipur's Noney district rose to 37 on Sunday with the recovery of three more bodies, while search operations were underway for another 25 people, an official said.

A wall of mud and rock swamped a camp housing railway construction workers and members of the Territorial Army in remote Manipur state in the northeast after heavy rain early on Thursday.

Emergency teams rescued 18 survivors within the first few hours of the incident.

But army spokesperson Angom Bobin Singh said Sunday that 28 people were still missing before an announcement later that three more bodies had been retrieved.

The fourth day of search operations was ongoing “despite adverse weather conditions” because of “heavy rains and fresh landslides,” Singh said.

The remote northeast has generally poor road and railway infrastructure but India in the last few years has pushed ambitious infrastructure projects to match a Chinese buildup across the border.

Dozens were killed in the area after flooding last month, with relentless rains causing landslides and inundating homes.

Experts say climate change is increasing the number of extreme weather events around the world, with damming, deforestation, and development projects in India exacerbating the human toll.