A former New York police sergeant has been sentenced to 18 months in prison in a U.S. case about China’s pursuit of critics ...

Xu, a former official in the city of Wuhan, left China in 2010 ... to go to prison in China to ensure his family’s well-being. Brooklyn-based U.S. Attorney John Durham said in a statement ...

McMahon, a retired New York Police Department sergeant turned private investigator, was hired around 2016 to find Xu, a former Wuhan city official ... a federal court in Brooklyn before learning ...