An oil storage depot is on fire in a Russian city just north of Ukraine after what the local governor said was an attack by two Ukrainian helicopters.
A video shared on Twitter shows a blaze near apartment blocks in Belgorod, some 40km (25 miles) from the border.
Some clips appear to show rockets hitting the oil depot.
However, Ukrainian aircraft have not struck targets in Russia previously. Governor Vyacheslav Gladkov’s claim was not confirmed by Ukrainian officials.
President Vladimir Putin’s spokesman also blamed Ukraine for the fire and said the incident “cannot be perceived as creating comfortable conditions for continuing the talks” with Kyiv. So far those peace talks have made little progress.
Russian authorities were doing everything to reorganise the fuel supply chain and avoid disruption of energy supplies in Belgorod, spokesman Dmitry Peskov, said.
