Rescue workers in Japan are trying to pull out a truck driver from a sinkhole that appeared on Tuesday and has since widened.
The sinkhole appeared in Yashio city in Saitama prefecture, near the capital Tokyo, swallowing a truck.
Rescue efforts have been hampered by road collapses, and officials have ordered scores of households in the area to evacuate their homes.
The 74-year-old driver was last heard responding to rescuers on Tuesday afternoon, according to local media.
While emergency crews managed to remove the truck bed from the pool-sized sinkhole, the driver's cabin remains buried under soil and debris.
The hole measuring about 10m (33ft) wide and 5m deep first appeared on Tuesday morning at a road junction.
It is believed to have been caused by an underground sewage pipe rupturing.
Officials said that as waste water from the damaged pipe flooded the hole, it caused a second sinkhole to appear on Thursday.
Video footage showed a utility pole and a restaurant signboard falling in that collapse.
The road then collapsed further, merging the two sinkholes together to become a 20m-wide crater, further complicating the rescue operation.
The massive sinkhole also contains a gas pipeline, prompting fears of a potential leak. Officials have issued evacuation orders for 200 households in the surrounding area.
They have also urged residents in and around the city to use less water.
