Three people were killed and one was injured when a Russian drone hit a residential building in the Kyiv region
Ukraine reportedly hit a Russian oil refinery and targeted Moscow during an attack involving a wave of at least 121 drones, one of the largest single operations of its kind during the war.
Video footage verified by the BBC shows a fireball rising over the refinery and pumping station in the Ryazan region, southeast of Moscow, which Ukrainian officials said was a target.
Russia said it had shot down 121 drones that had targeted 13 regions, including Ryazan and Moscow, but reported no damage.
Elsewhere, Ukrainian authorities said three people were killed and one was injured when a Russian drone hit a residential building in the Kyiv region.
Andriy Kovalenko, head of Ukraine’s centre for countering disinformation, said on Telegram that an oil refinery in Ryazan had been hit, as well as the Kremniy factory in Bryansk that Kyiv says produces missile components and other weapons.
Bloggers on Telegram posted images and videos of fires raging at the Ryazan facility, which covers around 6sq km (2.3sq miles). Verified footage shows people fleeing from the site in cars and on foot as a fireball rises into the sky.
BBC Verify used video footage to establish the location of two fires at the refinery. One video shows a fire near the northern entrance, whose location was matched by the road layout, signs and fences.
Two other videos show a larger fire on the eastern side of the refinery, around 3km (1.6m) away from the first. The location was identified by matching trees, pylons, road and path layouts.
Russian state-owned news agency RIA cited a statement from the Kremniy factory in Bryansk, which said work had been suspended after an attack by six drones. Pavel Malkov, the regional governor, said emergency services were responding.
The Kremlin acknowledged the attacks but made no mention of damage or casualties.
It claimed to have destroyed 121 Ukrainian drones, including six over the Moscow region, 20 in the Ryazan region, and a number over the border region of Bryansk.
Sergei Sobyanin, Moscow’s mayor, said the city’s air defences had intercepted attacks by Ukrainian drones at four locations.
He said air defences southeast of the capital in Kolomna and Ramenskoye had also repelled drones, without specifying how many. He said there was no damage.
bbc.com