Japanese company that exported machinery capable of making bio-weapons to China sues over arrests
- Three executives of Ohkawara Kakohki Co. in Yokohama were arrested last year for exporting spray dryers which can be used to make biological agents
- This comes as Tokyo cracks down on suspicious exports of technology with potential military uses, under apparent pressure from the US

Three senior officials of Ohkawara Kakohki Co. were arrested in March and May last year on suspicion of exporting spray dryers to China without obtaining the appropriate licences. The equipment is widely used in the food industry to produce items such as instant coffee granules, but can also be modified to manufacture biological agents.
They insisted on their innocence. Two of the plaintiffs were detained until February 2021, while the third defendant is believed to have died of natural causes before the case was due to come to court in early August. His family is continuing the compensation suit on his behalf.
Prosecutors withdrew the complaint in late July, just four days ahead of the first hearing, saying “doubts have arisen as to whether they are guilty of a crime”, Kyodo News reported.
The executives have since claimed that police concealed evidence that would have exonerated them and ignored details showing the equipment sold to China did not contravene export regulations.
“There has been no apology from the investigators. I want to prove my innocence and restore the company’s reputation for the sake of the former executive who died,” company president Masaaki Okawara said in a statement after the suit was filed with the Tokyo District Court on Wednesday.