About 1.3 tons of industrial waste, including plastic, were reduced to ashes Wednesday in a predawn fire that gutted two warehouses of an industrial waste disposal company here, police said.

No one was injured in the fire, which shrouded the area in thick smoke, police said.

The blaze, which broke out around 1:50 a.m. at Hijiri Kogyo Co., was still smoldering late Wednesday morning despite the efforts of some 140 firefighters of the Amagasaki city fire department to put it out.

The department said it would take a whole day to completely extinguish the fire. The two warehouses cover some 3,900 sq. meters of land.

Later Wednesday, police started investigating the cause of the fire.

It was the second warehouse fire at the waste disposal firm in the past year. The site is an industrial area about 2 km south of Amagasaki Station on the Hanshin Line.