Private investigator sentenced to prison for interstate stalking and harassment of Chinese nationals on behalf of China

In federal court in Brooklyn, New York, Michael McMahon, 57, of Mahwah, New Jersey, was sentenced to 18 months in prison and ordered to pay an $11,000 fine for acting as an illegal agent of the government of the People’s Republic of China (PRC) and interstate stalking and conspiracy to commit the same, for his participation in a scheme to coerce repatriation of a U.S. resident to the PRC as part of its international repatriation effort known as “Operation Fox Hunt.” McMahon and co-defendants Zhu Yong, 68, of East Elmhurst, New York, and Congying Zheng, 29, of Brooklyn, were convicted by a federal jury in June 2023 following a three-week trial. In January 2025, Zhu and Zheng were sentenced respectively to 24 months and 16 months in prison.

As proven at trial, between approximately 2016 and 2019, the defendants and their co-conspirators participated in an international campaign to threaten, harass, surveil, and intimidate John Doe #1 and his family in order to force him and his wife, Jane Doe #1, to return to the PRC to face purported corruption charges. Beginning in 2012, John Doe #1 and Jane Doe #1 had been targeted for repatriation as part of the PRC’s transnational repression programs known as “Operation Fox Hunt” and “Operation Sky Net.” John Doe #1 and his family had accordingly sought to keep their address out of public records.

Zhu hired McMahon, a retired NYPD sergeant working as a private investigator, to locate John Doe #1. McMahon obtained sensitive information about John Doe #1, which he then reported back to Zhu and others, including a PRC police officer. McMahon also conducted surveillance outside the New Jersey home of John Doe #1’s relative and provided Zhu and PRC officials with detailed reports of what he observed. The operation was supervised and directed by several PRC officials, including a PRC police officer and a PRC prosecutor.