The U.N. General Assembly has scheduled a Thursday vote on suspending Russia from the U.N. Human Rights Council.

A two-thirds majority is needed to suspend Russia, which would become only the second country to face this censure after Libya was suspended in 2011 for Muammar Gaddafi's forces firing on protesters.

U.S. Ambassador Linda Thomas-Greenfield said Tuesday that she "know[s] we're going to get" the two-thirds majority, pointing to two previous U.N. General Assembly resolutions that passed with 141 and 140 votes each.

-ABC News' Conor Finnegan

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.”

All Russian troops have left the Ukrainian cities of Kyiv and Chernihiv, withdrawing north toward the borders of Belarus and Russia to consolidate before likely redeploying to the Donbas region in eastern Ukraine, a senior U.S. defense official told reporters Wednesday.

But even with the Russians gone, the territory remains treacherous.

"There are some indications that they left behind mines and things like that, so the Ukrainians are being somewhat careful in some areas north of Kyiv as they begin to clear the ground and clear the territory and re-occupy it," the official said.

While the U.S. hasn't yet seen these troops redeploy elsewhere in Ukraine, it'll likely happen soon, according to the official. Ukrainian forces are preparing for a major fight in Donbas, the official said.

The official also said the Pentagon is "monitoring" an apparent nitric acid explosion in Ukraine's Luhansk region, which Russia blamed on Ukraine.

"We've seen the Russians claim that this was a Ukrainian attack on this. We do not believe that is true," the official said. "We do believe that the Russians are responsible, but exactly what they used when they did it, why they did it, what the damage is, we just don't have that level of detail," the official said.

The official also noted that a small number of Ukrainians currently in the U.S. for "professional military education" were pulled aside for a couple days of training on Switchblade drones, which the U.S. is sending overseas as part of its military aid, according to the official.

"Although it's not a very difficult system to operate, we took advantage of having them in the country to give them some rudimentary training on that," the official said.

-ABC News' Matt Seyler