Russia-Ukraine updates: US sanctions Russian military shipbuilder, diamond miner

At least 1,480 civilians have been killed and 2,195 others have been injured in Ukraine since Russian forces invaded on Feb. 24, according to the latest figures from the Office of the United Nations High Commissioner for Human Rights (OHCHR).

At least 123 children were among the dead and 183 among the injured, according to the OHCHR, which noted that the Prosecutor General's Office of Ukraine had reported at least 165 children were killed and 266 injured as of Tuesday.

According to a press release dated Tuesday from the OHCHR, most of the civilian casualties recorded were caused by the use of explosive weapons with a wide impact area, including shelling from heavy artillery and multiple launch rocket systems, as well as missile and airstrikes.

"OHCHR believes that the actual figures are considerably higher, as the receipt of information from some locations where intense hostilities have been going on has been delayed and many reports are still pending corroboration," the agency said.

Those areas include Mariupol and Volnovakha in the Donetsk Oblast, Izium in the Kharkiv Oblast, Popasna in the Luhansk Oblast, and Borodyanka in the Kyiv Oblast, where the OHCHR said "there are allegations of numerous civilian casualties." Casualty numbers from those locations "are being further corroborated" and thus are not included in the latest statistics, according to the agency.

More evidence has emerged that some of the bodies seen lying in the streets of Bucha were there before Russian troops retreated from the Ukrainian town, northwest of Kyiv.

According to the U.K. Ministry of Defense, an analysis of satellite imagery dated March 21 identified at least eight bodies lying on a street in Bucha. The town was occupied by Russian forces until March 31, the ministry said in an intelligence update Tuesday night.

As Ukrainian troops regained control over Bucha, graphic images surfaced earlier this week showing numerous bodies of dead civilians -- some shot at close range and with their hands bound -- strewn across streets and in mass graves. Ukrainian authorities have accused Russia of committing war crimes. Russia has denied responsibility, calling the footage of Bucha "fake" and saying that all of its units withdrew completely from the town around March 30.

However, mounting evidence contradicts Russia's claims that the scene was "staged" after its troops left.

Russian missiles destroyed fuel storage facilities in five cities across Ukraine on Wednesday morning, Russia’s Ministry of Defense said.

"On the morning of April 6, high-precision air- and ground-based missiles destroyed 5 fuel storage bases near Radekhov, Kazatin, Prosyanaya, Nikolaev and Novomoskovsk,” the ministry claimed in its morning briefing. “These facilities have been used to supply fuel to Ukrainian military formations in Kharkov, Nikolaev and Donbass areas.”

European Union leaders said Wednesday they were preparing a new round of economic sanctions against Russia, as outrage grew over civilian deaths in the Ukrainian town of Bucha.

"We have all seen the haunting images of Bucha. This is what is happening when Putin's soldiers occupy Ukrainian territory," European Commission President Ursula von der Leyen said. "They call this liberation. I call this war crimes. The Russian authorities will have to answer for them."

The sanctions to be proposed may include a ban on importing Russian coal, bans on transactions with four Russian banks, and a ban on Russian ships at EU ports, among other measures.

The fifth round of sanctions "will not be our last," von der Leyen said. U.S. officials are also expected to announce new sanctions on Wednesday, sources told ABC News.