A part of a road in Bangkok has collapsed, leaving a giant sinkhole that disrupted traffic, damaged infrastructure and prompted evacuations.

There were no casualties but three vehicles were damaged by the collapse, Bangkok governor Chadchart Sittipunt said.

Officials believed the collapse was caused by the construction of an underground train station.

Videos of the moment of the collapse on Wednesday show the face of the road slowly sinking, pulling down electricity poles and damaging water pipes.

Cars tried to back away as the hole grew larger and eventually severed the four-lane road.

One edge of the hole stopped in front of a police station, exposing its foundations.

A nearby hospital said it would close the outpatient services for two days.

Bangkok city officials said the hospital’s structure was not affected.

The police station and other nearby buildings were evacuated. Officials also cut electricity and water in the area.

Chadcharts said authorities were working to fix the hole as fast as they could, amid concerns that heavy rain could cause further damage.

Bangkok is in a monsoon season.