Russian authorities on Monday blamed Ukrainian intelligence agencies for orchestrating a bombing at a St. Petersburg café on Sunday that killed a Russian military blogger who fervently supported Moscow's invasion of Ukraine, The Associated Press reported.

Ukrainian authorities did not directly respond to the accusation, but President Volodymyr Zelenskyy said in reference to the attack that he doesn't think about events in Russia, and a senior Ukrainian official earlier described the bombing as part of Russia's internal turmoil.

Vladlen Tatarsky, 40, was killed Sunday as he led a discussion at the café on the banks of the Neva River in the historic heart of Russia's second-largest city, officials said. Tatarsky, who had filed regular reports from the front lines in Ukraine, was the pen name for Maxim Fomin. He had accumulated more than 560,000 followers on his Telegram messaging app channel.

The bombing, which also wounded more than 30 other people, was the latest attack inside Russia on a high-profile pro-war figure.

In August 2022, Russia's FSB security services accused Ukraine of being behind a car bombing outside Moscow that killed the daughter of hard-line Russian ideologue Aleksander Dugin. Kyiv has denied the charges.

Meanwhile on Monday, Russian authorities announced the arrest of Darya Trepova, a 26-year-old St. Petersburg resident seen on video presenting Tatarsky with a package containing a bust of Tatarsky just before the explosion.

The Interior Ministry released a video showing Trepova telling a police officer that she brought the statuette that exploded to the café. When asked who gave it to her, she said she would explain it later. The circumstances under which Trepova spoke were unclear, including whether she was under duress.

According to Russian media reports, Trepova told investigators she was asked to deliver the bust, but didn't know what was inside it.