Two suspects in the murder of politician Boris Nemtsov were detained March 7, the Russian Federal Security Service (FSB) Head Alexander Bortnikov told reporters, according to RIA Novosti.
"As a result of the conducted work, two suspects in this crime were today detained," said Bortnikov, adding that the detainees are Gubashev Anzor and Dadayev Zaur.
Bortnikov also said the Russian President Vladimir Putin was informed about the arrests.
He also noted that the suspects are from the Caucasus, adding that the necessary operational and investigative actions are being taken.
Bortnikov said that "at an instruction of the country's president, Vladimir Putin, the FSB, the Interior Ministry and the Russian Investigative Committee were entrusted to set up a joint operational and investigative group for the investigation of Boris Nemtsov's murder."
Nemtsov, who formerly held several senior positions in the Russian government, and then became an oppositionist, was shot dead in central Moscow on the night of Feb. 27.
The investigation is considering several versions of the crime, including an assassination.