June 2 The theory that an employee of the Post Office had tipped off the two perpetrators of the. sensational $2,500,000 Post. Ofce robbery on Saturday was strengthened by police Investigations yesterday which led to} the pellet that the robbers were previously informed regarding the place where the huge sum was key No trace was found of the money or the two men wanted in conneotion with the robbery; a Chinese and a man believed to be a. Japanese who were unarmed and who coolly, walked into the Post OMice where the "suspected Japanese announced that he Was from the authorities and with his conferedate "removed the money contained li ten parcels which they placed in a hired car and drove away.
During the day yesterday detec tives of Hongkew station followed up every available clue and rounded up @ number of suspects who were taken to the station and were Teased after questioning. The Japunese authorities, it was learned, were conducting a thorough Investigation Ito the crime and further develop ments are expected soon.
Text read from the printed page and cleaned; old type leaves the occasional error.