Asahi Kasei Construction Materials Corp. is suspected of falsifying data in some 300 of the 3,040 piling projects it has worked on over the past decade, sources close to the matter said Monday.
The Asahi Kasei Corp. subsidiary is reviewing all projects it worked on during that period after admitting last month to engaging in faulty piling work and data falsification on a condominium building in Yokohama that is now tilting.
The data falsification likely involves more than 10 people, including the male employee who held a key on-site position during the Yokohama condo project, the sources said.