Floods and landslides triggered by intense monsoon rains killed at least 50 people in northern and eastern India over the last three days, officials said on Sunday.

The rains overwhelmed hundreds of villages, sweeping away houses and leaving residents stranded as rescue crews have been racing to evacuate survivors, Khaleej Times reported. Heavy showers followed by landslides and flooding in the Himalayan state of Himachal Pradesh over the past three days killed at least 36 people.

In the neighbouring mountainous state of Uttarakhand, an official government release said that four were dead and 13 were missing due to continuous rainfall.

“We have deployed choppers to rescue people who are stuck in remote areas due to rain-related incidents. The rescue operation is happening on full swing,” said Ranjit Kumar Sinha, an official in Uttarakhand’s disaster management department.

In the eastern state of Odisha, at least six people were dead amid ongoing torrential rains, a state official said.