Dozens of rescuers are searching the banks of a mountain river looking for people missing after monsoon floods swept away Nepal’s main bridge connecting to the country to China and caused at least nine deaths.

Police said dozens of rescuers were at the area on Wednesday and more were expected to join the rescue efforts.

Nine dead bodies have been recovered from the river.

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Security forces have rescued 55 people, including four Indians and a Chinese person, according to the Rasuwa District Administration Office.

Prime Minister Khadga Prasad Oli, along with top ministers and officials, flew to the area.

Oli called an emergency meeting Tuesday night and instructed all security forces and government offices to assist the rescue and recovery efforts.

The flooding on the Bhotekoshi River early Tuesday destroyed the Friendship Bridge at Rasuwagadi, which is 120km north of the capital, Kathmandu.

Several houses and trucks that were parked at the border for customs inspections also were swept away.

Hundreds of electric vehicles imported from China had been parked at the border point.

The 19 missing were 13 Nepali citizens and six Chinese nationals, the National Disaster Risk Reduction and Management Authority said.

The Chinese and eight of the Nepalis were workers at a Chinese-assisted construction project on the Nepali side of the border, according to the Chinese embassy in Nepal, quoted by state media.

The destruction of the bridge has halted all trade from China to Nepal through this route.

The longer alternative is for goods to be shipped from China to India and then brought overland to Nepal.

Monsoon rains that begin in June and end in September often cause severe flooding in Nepal, disrupting infrastructure and endangering lives.