the FSB says that the man was arrested on Friday and that a criminal investigation has been initiated against him.
on Monday a Russian foreign ministry announces that it is formally informed the united states that one of the country's citizens have been arrested. The united states has also requested consular access to the person.
News of the arrest comes at the end of a year punctuated by scandals involving Russian spies should have been involved.
Maria Butina, who is accused of being Russian agent who tried to infiltrate the u.s. vapenlobbyn the NRA. She faces up to six months in prison and deportation.
the Russian agents have also been identified as required to nervgiftsattacken in Salisbury in the Uk against the former dubbelagenten Sergei Skripal and his daughter.