At least one person has been killed in an overnight attack on St Petersburg that successfully targeted two of the city's oil facilities.
The region's Governor Alexander Beglov said fires were being extinguished at the St Petersburg Oil Terminal and the Ruchyi oil depot following the attack, which also injured at least five. BBC reported.
A logistics centre belonging to Ozon known as Russia's Amazon and a data centre belonging to Facebook equivalent VKontakte were also hit.
Kyiv has not yet commented on the strikes. Ukrainian President Volodymyr Zelensky said on Saturday morning that Russia had targeted his country's energy sector 76 times since Donald Trump declared an "energy ceasefire" last week.
Ukraine had paused its strikes on Russian oil facilities - which it says are to limit the main revenue stream for Moscow's war effort - for three days after the announcement, while accusing Russia of continuing.