Police raid highway operator over Japan tunnel collapse: NHK

TOKYO (AFP) - Japanese police on Tuesday raided offices belonging to a highway operator over a weekend tunnel collapse that killed nine people.

More than eight officers from the Yamanashi Police Department entered the office of NEXCO in Hachioji, western Tokyo, a spokesman for the highway operator said.

"We are fully cooperating with the authorities over the accident," the spokesman told AFP.

Police also plan to raid more of the company's offices in connection with the tragedy at the Sasago tunnel, which passes through hills near Mount Fuji, Japanese broadcaster NHK said.