When the incident happened, at around 10:15, workers were repairing the tunnel and luckily none of them were inside the tunnel, VOV has learned.

Witnesses said about 30m3 of rocks and soils from the dome fell down, burying the rail track running through the tunnel.

According to Le Quang Vinh, director of the Phu Khanh Raiway Transport branch, the recent heavy rain caused the landslide.

Workers were trying to clear rocks and soils and reinforce the tunnel, enabling passenger and freight trains to pass through the tunnel.

The Deo Thi railway tunnel is being repaired as part of a project to renovate degraded railway tunnels throughout the country, with a total investment of VND7,000 billion.

On April 12, the Bai Gio railway tunnel in Van Ninh district, Khanh Hoa province, also collapsed during renovation, causing the North-South rail service passing through the tunnel to grind to a halt for nine days.

VOV