A concert cellist linked to Russian President Vladimir Putin moved millions of francs through Swiss bank accounts without any proper checks, Swiss prosecutors alleged at the opening of a trial of four bankers accused of helping him. Prosecutors say that Sergei Roldugin, a close friend of Putin according to the indictment, deposited millions of francs in accounts between 2014 and 2016. The four bankers appeared at Zurich District Court at the start of their trial on March 8, accused of lacking diligence in financial transactions. The bankers -- three Russians who worked in Zurich and one Swiss -- deny the allegations. To read the original story by Reuters, click here.