Yeo Jun Wei

Yeo was given a two-year long order of detention under the Internal Security Act on 29 January 2021, after investigations showed that in addition to Yeo's spying activities against USA, he had tried further his information gathering activities on Singapore government as well by attempting to secure employment in a range of government jobs. Yeo had also carried out similar activities in Singapore, as he did in USA, approaching several people with relevant knowledge and expertise via social media in order to obtain information to write reports about Singapore for his handlers in China. The duration of the detention would be used to further investigate the full extent of Yeo's activities.

On 14 December 2021, Dickson Yeo was released from detention under a suspension order, after the authorities ascertained that he no longer posed as a danger to Singapore's security and intelligence. The order of release also stated some unstated conditions that Yeo should comply with while he is out of prison, and he will be re-detained should he fail to comply with them.

Yeo's indictment was unsealed on 18 June 2020, with a guilty plea from Yeo entered on 24 July 2020 in United States District Court for the District of Columbia. In his plea, he admitted to the charge of "one count of acting within the United States as an illegal agent of a foreign power without first notifying the Attorney General", in violation of 18 U.S.C. § 951. Yeo was sentenced to 14 months' imprisonment on 9 October 2020 (the sentence was two months short of the original sentence the prosecutors sought in their closing submissions on sentence). The sentence was backdated to November 2019, 11 months earlier since his confinement pending his conviction by the court in view of the prevalence of the COVID-19 pandemic in the United States (this was the same reason the judge cited for giving Yeo a lighter sentence for his crime), meaning that Yeo would have to serve three more months in prison and would be released in January 2021.

Dickson Yeo was released and returned to Singapore on 30 December 2020. Upon his return, he was arrested in Singapore by the Internal Security Department for investigations to investigate if he had engaged in "activities prejudicial to Singapore’s security".

Foreign Ministry spokesman Wang Wenbin told the media on 27 July 2020 that he was unaware of Yeo's espionage cases. Wang criticised the United States and also berated the US to stop the "smear" campaign against China, saying: "I’m not aware of what you just mentioned, but I would like to point out that lately, US law enforcement has been busy hyping up the so-called China infiltration and espionage issues to the point of paranoia."

Responding to media queries, Singapore's Ministry of Home Affairs (MHA) issued a statement on 26 July 2020 that it was informed by US authorities of Yeo's arrest in November 2019. Its investigations did not reveal any direct threat to Singapore's security. The MHA reminded Singaporeans of the expectations to abide by the laws of the country which they visit or reside in. Appropriate consular assistance was rendered to Yeo as required, a fact which the foreign affairs minister of Singapore, Vivian Balakrishnan, confirmed.

The institution announced the termination of Yeo's PhD candidature on 26 July 2020, and removed Yeo's profile from the institution official website, after the information of Yeo's criminal act were released by the United States Department of Justice.

Retired Singapore diplomat Bilahari Kausikan criticised Yeo on his Facebook page on 25 July 2020. Kausikan characterised Yeo for being foolish and said his actions could cause all Singaporeans to be suspected, and stated that it is not unreasonable to assume Yeo was recruited to work as a spy when he was a student at the LKYSPP. Kausikan added that he later learnt that Huang Jing, the political scientist and alleged spy, was Yeo's supervisor in LKYSPP.

Between January 2019 to July 2019, Yeo stayed in Washington, D.C., he attended several events and speaking engagements at D.C. area think tanks. Yeo also contacted several individuals from lobbying firms and defence contracting companies.

Sometime after the Army officer had provided his report, one of the Chinese intelligence officers instructed Yeo to recruit him to provide classified information. Yeo was also promised more money if the Army officer could become a permanent conduit of information. Yeo returned to United States in November 2019 with plans to ask the Army officer to provide classified information, and reveal who he was actually working for. However upon arrival at the airport, Yeo was stopped by law enforcement, questioned, and eventually arrested. No further contact with the Army officer could be made by Yeo.

In 2018, Yeo created a fake consulting company that used the same name as a prominent U.S. consulting firm that conducts public and government relations, and Yeo posted job advertisements under that company name. He would receive more than 400 resumes, with 90 percent of them coming from U.S. military and government personnel with security clearances, and he passed resumes of interest to one of the Chinese intelligence operatives.

Between 2018 and 2019, Yeo spotted another individual on LinkedIn who was employed at the US Department of State at the time. This individual felt dissatisfied at work and was having financial trouble, worrying about his upcoming retirement. Despite his misgivings about jeopardising his retirement pension if it was made known that he had provided Yeo a report, he wrote a report about a then-serving member of the Cabinet of the United States, and was paid $1,000 or $2,000.

While still receiving education at LKYSPP, Yeo made a presentation on Southeast Asia's political situation at Beijing in 2015 and was approached by individuals who claimed to be China-based think tanks. They offered him money in exchange for political reports. Yeo later learnt that at least four of these individuals were Chinese intelligence officers. One of the intelligence officers later offered Yeo a contract to work with the People's Liberation Army. Yeo refused to sign the contract but he continued to assist and work for the intelligence service.

Between 2015 and 2019, Yeo had made frequent trips to China, meeting different operatives for at least 40 times. In each trip, he would be processed in a separate office, away from the custom lines upon arrival to conceal his identity. Yeo would also maintained communications with the officers via WeChat, through by changing different WeChat accounts and phones each time they communicate. However, when Yeo was in United States, he was instructed not to communicate with the intelligence officers over concerns that their communications would be intercepted. If need be, he would email them from a local coffee shop. Yeo was also issued with a bank card to facilitate payments to his targets.

In 2015, through LinkedIn, Yeo spotted and contacted a civilian who was working with United States Air Force on the F-35B military aircraft programme. The civilian held high-level security clearance, and was having financial trouble. Yeo had him to write a report. The civilian also had provided additional information about the geopolitical implications of the Japanese purchasing F-35 aircraft from the US from which Yeo drafted a report and sent it to his contacts in intelligence service.

Yeo was born and raised in Singapore. He studied at National Junior College between 1998 and 1999. Thereafter, he studied mass communications at the Oklahoma City University between 2004 and 2006. He went on to the National University of Singapore (NUS) to study for a master's degree between 2009 and 2011. He later started studying for a Doctor of Philosophy in Public Policy degree in 2015 at the NUS Lee Kuan Yew School of Public Policy (LKYSPP). In 2019, he was granted a leave of absence from the programme.

Yeo Jun Wei (Chinese: 姚俊威; pinyin: Yáo Jùnwēi; born 22 February 1981), also known as Dickson Yeo, is a Singaporean and an agent accused of assisting the People's Republic of China (China) to spy on the United States. On 24 July 2020, he pleaded guilty at the United States District Court for the District of Columbia of assisting China in collecting information in the United States without prior notification made to the United States Attorney General. After released by USA on 30 December 2020 and upon return to Singapore, he was first arrested and then further detained by Singapore's Internal Security Department on 29 January 2021 for his spying activities, before he was released on 14 December 2021 conditionally after they ascertained he no longer posed a threat to the intelligence of Singapore.