The Russian authorities announced Monday the arrest of the main suspect in the attack that killed a famous military blogger who strongly supports the attack on Ukraine .

The Russian Investigative Committee said via Telegram that investigators "arrested Daria Trepova, who is suspected of participating in the explosion in a cafe in St. Petersburg" on Sunday.

And the Russian RIA Novosti news agency reported that Trepova was previously placed in detention for ten days for her participation in an unauthorized demonstration in February of last year, shortly after Russia launched its attack on Ukraine.

The website of the Ministry of the Interior stated that Trepova, 26, was born in Saint Petersburg and is a Russian citizen.

Sunday's blast killed Vladlin Tatarsky , 40, a prominent blogger born in the Donbass region in eastern Ukraine who supported Russia's invasion of Ukraine and was also critical of the Russian military.

It was reported that Tatarsky, whose real name was Maxim Fomin, was killed after receiving a booby-trapped statuette, and 32 people were injured in the attack.