An explosion at a military facility in Russia’s Leningrad Oblast killed three servicemen on February 17, 2026, after part of a building collapsed at a site linked to a training center that has prepared troops for deployment to Ukraine. At least four others were reportedly trapped under the rubble, and rescue crews were still working the scene hours after the blast. Russian authorities have not said what caused the explosion.
Building Collapse Kills Three Servicemen in Sertolovo
The explosion demolished part of a military commandant’s office in the town of Sertolovo around 2:20 p.m. local time, bringing down the second and third floors of a building at a facility linked to the 56th Guards District Training Center, just north of St. Petersburg.
Leningrad Oblast Governor Alexander Drozdenko confirmed the incident on his Telegram channel and said he had directed law enforcement agencies to assist the military with debris removal and rescue operations. He did not name the victims or publicly identify the facility beyond its general location.
Death Toll Rose During Rescue Effort
Initial reports from Russian Telegram channels Mash and 112 placed the death toll at two. The governor’s office later revised the figure to three confirmed dead. The independent Russian outlet Astra reported that four additional servicemen remained buried under rubble as emergency crews worked to clear the site with heavy machinery.
St. Petersburg’s Channel 78, citing an unnamed source, reported that several others were wounded. The outlet also reported that one injured person had been pulled from the wreckage alive and received medical treatment on site. Authorities warned that the risk of further structural collapse remained as rescue teams continued working through the damaged building.
Facility Reportedly Used to Train Troops for Ukraine Deployment
The explosion struck military unit 71717, part of the Leningrad Military District’s infrastructure in Sertolovo. On open-source mapping tools, the damaged structure is listed as an officers’ dormitory. Astra reported that the base had been used to train volunteers heading to fight in what Moscow officially calls its “special military operation” in Ukraine.
The Russian state-affiliated foundation Leningradsky Rubezh had previously publicized the construction of a training center at the site, saying it would allow servicemen to acquire skills in multiple military specialties, including drone operation and counter-drone defense, before deploying to combat zones.
As of February 18, the defense ministry had not issued a public statement on the incident. Without independent access to the site, the only public account of events comes from the governor’s office and Russian media channels citing military and emergency sources.
Latest in a Series of Incidents at Russian Military Sites
The Sertolovo blast adds to a string of fires, explosions, and structural failures reported at Russian military installations since Moscow launched its full-scale invasion of Ukraine in February 2022. Some of those incidents have been attributed to Ukrainian drone strikes or sabotage operations. Others appear connected to the toll of sustaining a prolonged ground war on aging infrastructure and overstretched personnel.
Russian authorities have not linked the Sertolovo explosion to any external attack, and no Ukrainian officials have claimed responsibility. The governor framed the incident as a matter for investigation without offering any preliminary explanation.
Investigation Underway With Few Answers So Far
The investigation remains in its early stages, and the full extent of the damage has not been disclosed. Russian military investigations rarely produce public findings. When they do, the results tend to surface quietly, months after the fact.
Three servicemen are dead, others may still be buried, and no one in Moscow has explained why. If past incidents are any guide, a full public accounting is unlikely. The families of the men killed in Sertolovo will probably have to settle for silence.
