A powerful explosion ripped through a café on St Petersburg’s Nevsky Prospect on Tuesday, killing prominent Russian military blogger Vladlen Tatarsky.

Emergency services rushed to the scene, reporting at least one fatality and an unspecified number of injuries. Witnesses described a deafening blast that sent shards of glass and debris onto the street, prompting a swift cordon around the premises.

Authorities say the blast was caused by an improvised explosive device placed inside the establishment. The local prosecutor’s office confirmed that investigators have secured the area and are collecting forensic evidence, but offered no details on the device’s composition.

"We are treating this as a terrorist act and will pursue all leads," a police spokesperson told reporters.

Patrons inside the café were caught off‑guard, with several describing a sudden flash of light followed by a wall of smoke. One survivor, who asked to remain anonymous, said the interior was reduced to a “charred mess” and that the smell of burnt furniture lingered for minutes after the fire was extinguished.

Authorities launch investigation

St Petersburg’s chief of police announced a joint operation involving the city’s anti‑terrorism unit and federal security services. The investigation will focus on who placed the device and whether the target was the venue itself or its high‑profile guest.

Investigators have detained several individuals for questioning, though none have been publicly identified. The prosecutor’s office has not ruled out the possibility of a politically motivated attack, noting that similar incidents have occurred in Russia’s western cities over the past year.

Who was Vladlen Tatarsky?

Vladlen Tatarsky, real name Maxim Fomin, built a following of millions through his YouTube channel and Telegram posts that glorify Russian military operations. He was a vocal supporter of the war in Ukraine, often publishing battlefield footage and commentary that aligned with Kremlin narratives.

His influence extended beyond social media; analysts say his posts have been cited by pro‑government media and occasionally echoed in official speeches. Tatarsky’s reputation for blunt, sometimes controversial, analysis made him a fixture at military‑themed events and a frequent guest at cafés frequented by veterans and security personnel.

Possible motives

Speculation about the motive has already divided experts. Some Western security analysts view the attack as a possible retaliation by Ukrainian sympathisers, pointing to a pattern of targeting Russian public figures involved in the war narrative.

Others warn that internal Russian factions could be at play, suggesting that the blast might be a warning to outspoken supporters of the war or a power struggle within the security apparatus.

Until forensic results are released, officials say they will not comment on any specific theory. The Kremlin has not yet issued a statement, but a spokesperson for the president’s office is expected to address the incident later this week.

St Petersburg residents, accustomed to occasional protests and occasional unrest, gathered outside the cordoned café, holding candles and demanding answers. The city’s mayor urged calm, promising that “the truth will emerge” as investigators work around the clock.

With the investigation ongoing, the incident adds a new layer of tension to an already volatile geopolitical climate, raising questions about the safety of public figures who champion the Russian war effort.