A 10th particular person suspected of involvement in an assault on the St Petersburg metro earlier this month has been detained, Russian safety officers say.
Akram Azimov is claimed to be the older brother of Abror Azimov, the suspected planner who was arrested on Monday.
The older Azimov is believed to have transferred funds used for the assault and arrange hyperlinks with worldwide terrorist organisations.
The bombing killed 14 and injured greater than 50 individuals.
Suicide bomber Akbarzhon Jalilov additionally died within the blast.
Each Azimov brothers are naturalised Russian residents from Kyrgyzstan.
The Federal Safety Service (FSB) mentioned in a press release that Akram Azimov, born in 1988, was detained in a village outdoors Moscow on Wednesday.
It described him because the “older brother of the presumed organiser” Abror Azimov.
Officers beforehand mentioned they believed Abror had educated Jalilov, a Kyrgyz-born Russian, forward of the bombing.
Nevertheless, talking in a Moscow courtroom on Tuesday, Mr Azimov mentioned he “was concerned, however circuitously”.
He denied reviews by his lawyer that he had confessed to organising the assault.
The opposite eight individuals detained in reference to the assault – six in St Petersburg and two in Moscow – are additionally from Central Asia.