SINGAPORE - The Singaporean who spied on the United States for China has been arrested by the Internal Security Department on his return to Singapore on Wednesday (Dec 30). Dickson Yeo Jun Wei, 39, had been sentenced to 14 months’ jail in the US for spying, and he revealed to investigators there that his "previous intelligence taskings targeted other states apart from the US", said the ISD in a release on Wednesday. The ISD will interview Yeo to establish if he had engaged in "activities prejudicial to Singapore’s security". "Singapore will not allow our nationals to be subverted or used by any foreign actors for activities prejudicial to our security and national interests," said the department. "The Government takes a very serious view of any Singaporean who enters into a clandestine relationship with a foreign government and engages in espionage or subversive activities at the behest of the foreign power." The ISD added that such individuals will be firmly dealt with. It cannot provide any further information, as investigations are still being done. Yeo had pleaded guilty in July this year, to obtaining sensitive information from Americans under the direction of Chinese intellig...