Russian authority has arrested a woman in the drive for the killers of a pro-war blogger Vladlen Tatarsky died in a blast at a St Petersburg café, reports BBC.
Darya Trepova, 26, was earlier placed on the interior ministry's wanted list and her arrest was later confirmed by Russia's Investigative Committee.
Russian media reported that Tatarsky was passed a statuette shortly before the blast, and there is speculation a device could have been hidden inside.
More than 30 other people were wounded.
Authorities said the attack in the centre of Russia's second biggest city was being treated as a "high-profile murder" and that it had been carefully planned and involved several people.
Russia's anti-terrorism committee alleged it was organised by Ukrainian special services "with people co-operating with" opposition leader Alexei Navalny.
Mr Navalny has been in jail ever since he returned to Russia from Germany in January 2021. He survived a nerve agent attack in Russia in August 2020, which was blamed on Russian security service agents.
Ms Trepova was detained in a St Petersburg flat owned by a friend of her husband's, Russian reports said. On the day of Russia's full-scale invasion last year she was reportedly detained for a number of days for taking part in an anti-war protest.
Tatarsky had been attending a patriotic meeting with supporters in the cafe as a guest speaker.
A video circulating on social media showed a young woman in a brown coat apparently entering the cafe with a cardboard box.
Images also showed the box being placed on a table in the cafe before the woman sat down. Another video showed a statue being handed to Tatarsky, possibly from the same box.
Bd-pratidin English/Lutful Hoque
