According to reports cited by Russian news media, a bomb and fire on Thursday at a facility owned by Russia’s FSB security service in the southern city of Rostov-on-Don resulted in at least one fatality and two injuries.
In Rostov, the city of a region that borders portions of eastern Ukraine where clashes with Russia are raging, footage shot by Reuters showed dense black smoke pouring into the air near residential buildings and a shopping center.
The FSB, whose roles include internal security and counter-terrorism, said in a statement that fuel and lubricants had caught fire in a workshop, causing an explosion and the partial collapse of the building housing its border patrol section.
Rostov Governor Vasily Golubev said the fire appeared to have been caused by an electrical short-circuit, and that nearby buildings had been evacuated while the fire burned.
Russian news agencies quoted emergency services as saying one person had been killed and two more injured.
Russia has reported sporadic fires at oil and gas installations on Russian territory near Ukraine, as well as attacks on its railways, since starting what it calls its “special military operation” last year.
Moscow has sometimes accused Kyiv of cross-border attacks with drones. Last month, President Vladimir Putin told the FSB to do more to counter what he said was increasing espionage and sabotage by Ukraine and the West.
Mykhailo Podolyak, a senior aide to Ukrainian President Volodymyr Zelenskiy, denied that Ukraine was responsible for the blast in Rostov, tweeting: “Ukraine doesn’t interfere, but watches with pleasure…”