The parents of a U.S. engineer found dead in Singapore last year said on Wednesday they will not take part in the rest of a coroner’s inquiry into his death, which they say was linked to a project involving the transfer of sensitive technology to China. In a statement issued through their lawyers, Rick and Mary Todd said they had lost confidence in the system investigating the death of their 31-year-old son, Shane, who was found hanging in his Singapore apartment last June. The Todds did not appear in court on Wednesday, the day after a U.S. medical examiner they...