Arson suspected in third small fire aboard AIDAprima in a month

The fire reportedly was quickly extinguished by workers, with no injuries.

Citing police and firefighters, the Japan Times said a worker found cardboard and insulation materials burning.

The Japan Times reported it was the third fire in January, following one in a cabin on Jan. 13 involving a piece of cloth and one on Jan. 11 in electrical wiring near a theater.