In early June, on the eve of Cheng's formal confirmation as BOI director, National Assembly member Lai Ching-lin called a press conference to make the following claims: On September 13, 1986, Cheng went to France to visit a friend, Yang Wan-ching.
六月初，程泉代理調查局長，即將真除的前夕，國大代表賴勁麟突然召開記者會公佈程泉案，當時的法務部長廖正豪立即下令組成專案小組，一面約談程泉，一面赴法實地調查。