Russian security forces arrested investigative journalist Oleg Roldugin following a raid on the Moscow newsroom of the independent newspaper Novaya Gazeta.A Moscow court subsequently ordered Roldugin to be held in pretrial detention until May 10 while authorities investigate charges of illegally collecting data.The veteran journalist has built a career exposing corruption among the Russian elite including
Dmitry Medvedev and Chechen leader
Ramzan Kadyrov.