TOKYO — A truck that fell into a sinkhole that suddenly opened on a road near Tokyo has captured national attention as attempts to rescue the elderly driver drag on. Residents near the hole have taken shelter at a local school, and there were worries Thursday about flooding and leaking sewage water. There’s also been a renewed debate about Japan’s aging infrastructure.

Just after the sinkhole appeared in Yashio City, just northeast of Tokyo, on Tuesday morning a 3-ton truck fell into it. At first the sinkhole was roughly 33 feet wide and 16 feet deep, but it has since grown to twice that size.

A 74-year-old man is believed to be trapped in the cabin of the flat-bed truck. He was conscious and communicating with rescue workers earlier but hasn’t responded since Tuesday afternoon, according to the Yashio fire department. Saitama prefectural sewer system official Jun Uehara said corrosion, possibly because of strong acid constantly passing through the system, might have created a hole in the pipe, causing soil above to fall in and create a large hollow space.

— The Associated Press