The New York Post writes that the US FBI has confiscated the phone and other devices of the Polymarket administrator. 
According to the NYP source, at 6 a.m. Eastern Time in the US, law enforcement officers entered the home of the platform administrator, 26-year-old Shane Coplan, and took his devices without explaining the reason. He himself was not detained. The NYP source explains the actions of law enforcement agencies by political motives and the fact that Coplan will allegedly be accused of market manipulation and falsifying statistics in favor of Trump.