ODESA, Ukraine — For the Russians, the Ukrainian fighters held prisoner at Correctional Colony No. 210 are a trophy. For the Ukrainians, they’re battle heroes.

Why both facet would need any of them lifeless is a thriller, however that’s the query that hung over the preventing in Ukraine on Friday after one other lethal episode, with both sides accusing the opposite of committing a battle crime.

What is understood is that an explosion ripped by means of a barracks of the jail camp within the Russian-occupied city of Olenivka in southeastern Ukraine early Friday morning, killing at the least 50 captured fighters and maiming dozens extra, in keeping with each Ukrainian and Russian officers. Movies posted by Russian battle bloggers present twisted metallic bunk beds and the charred our bodies of their former occupants.

Russia’s protection ministry mentioned in a day by day briefing on Friday that Ukraine had used an American-made superior rocket system to strike the jail, aimed toward sending a cautionary warning to Ukrainian troopers who is likely to be contemplating surrendering to Russian forces.

Ukrainian officers known as these accusations absurd, charging that Russia prompted the carnage to cowl up atrocities they’d dedicated on the jail. “Russian occupiers are pursuing their prison objectives, accusing Ukraine of committing battle crimes, whereas hiding the torture and capturing of prisoners,” the Ukrainian common employees mentioned in an announcement.

It mentioned that Ukraine used the brand new Excessive Mobility Artillery Rocket System, or HIMARS, solely to assault Russian navy targets.

Ukrainian forces have efficiently employed the Western-supplied rocket system to destroy Russian ammunition depots and command facilities with excessive levels of accuracy. The HIMARs have fired a whole lot of satellite-guided rockets in Ukraine, and there have been no reviews of them mistakenly hitting civilian targets.

Neither facet’s claims in regards to the explosion on the jail could possibly be independently verified. However Russia has frequently blamed its personal assaults on civilian targets on Ukraine — together with a strike in April that killed 50 individuals at a prepare station in Kramatorsk — asserting with no proof that Ukraine is conducting so-called false flag operations to make Russia look unhealthy.

A senior U.S. navy official, talking in regards to the Russian assertions of a HIMARS assault on the camp, mentioned: “We’ve got seen no proof to again these claims in anyway.”

The prisoners held on the compound in Olenivka weren’t simply any troopers. An estimated 2,500 of them have been fighters from the Azovstal Iron and Metal works within the metropolis of Mariupol. Their 80-day battle towards a vastly superior Russian drive from bunkers beneath the mammoth manufacturing facility has grow to be legendary in Ukraine, with commanders’ faces now seen on billboards across the nation.

Their give up in mid-Could marked the tip of one of many battle’s most brutal battles and handed Russia a major victory, in addition to a bargaining chip. Already, Ukraine and Russia have negotiated the alternate of 144 of essentially the most significantly injured fighters and talks had been underway for an additional prisoner swap.

Russian officers have supplied no conclusive proof to again up their claims that Ukraine struck the jail. A Kremlin-friendly battle blogger posted video of twisted metallic shrapnel he mentioned was the stays of a HIMARS rocket. No Russian guards have been killed or injured within the explosion, in keeping with Russian officers.

Ukraine’s intelligence businesses shortly weighed in. The home intelligence service, the SBU, revealed an audio recording Friday night time of what the company claimed have been two Russian-backed separatist fighters discussing the explosion over the cellphone. Within the name, which couldn’t be independently verified, one individual mentioned there was no sound of any rocket earlier than the explosion, and that Russian forces had seemingly blown up the barracks themselves.

Mykhailo Podolyak, a prime adviser to President Volodymyr Zelensky of Ukraine, accused Russia of finishing up a “rigorously deliberate assault” on the detention middle, noting that there have been no tactical navy targets within the city of Olenivka. Russian forces had transferred Ukrainian troopers to the barracks solely a number of days earlier than Friday’s assault, he mentioned.

“The Russians intentionally, cynically and deliberately murdered Ukrainian prisoners en masse,” he mentioned.

In a uncommon joint assertion revealed on Friday night time, Ukraine’s intelligence providers, the navy and the human rights ombudsman known as the assault “an organized homicide of Ukrainian prisoners” and known as on the United Nations and the Worldwide Crimson Cross to journey to Olenivka with Ukrainian officers to analyze.

Prisoners who’ve been launched from Correctional Colony No. 210 described hellish situations. Guards supplied simply sufficient meals for prisoners to outlive and meted out common beatings.

Vitaliy Sytnikov, a 35-year-old civilian who had been arrested whereas attempting to evacuate different residents from Mariupol in March, described a disciplinary cell generally known as “the pit.”

“Virtually daily we heard the beatings of prisoners of battle there,” Mr. Sytnikov mentioned in a phone interview, including that many of the victims of such remedy have been troopers from Azovstal.

Simply earlier than the Azovstal troopers arrived in mid-Could, two former prisoners mentioned, the camp underwent a major change. The separatist fighters who as soon as stood guard have been changed by troopers from Russia correct, and the separatists’ insurgent flag was taken down and changed by the Russian tricolor flag; the modifications have been a testomony to the brand new prisoners’ significance.

However there was one other vital change, in keeping with Dmitriy Bodrov, 32, one other civilian from Mariupol who was held on the camp. Russian troopers started deploying close to the barracks and firing off rockets within the route of Ukrainian positions, seemingly attempting to impress Ukrainian forces into firing on the jail camp.

“Due to all that artillery, every thing round was burning,” Mr. Bodrov mentioned.

He mentioned that within the time earlier than his launch on July 4, Ukrainian forces had by no means hit the territory of camp.

Mr. Bodrov mentioned that the economic zone on the camp, the place Friday’s explosion occurred, had not beforehand been used to deal with prisoners. Gen. Kyrylo Budanov, the commander of Ukraine’s navy intelligence service, mentioned on Friday that building of the barracks in that zone had been accomplished two days earlier than and the prisoners moved there simply earlier than the explosion.

As a result of the Azov fighters have been thought of excessive worth prisoners, it was unclear why Russia would wish to kill them. In an announcement, Common Budanov supplied one doable rationalization, saying the assault appeared to have been carried out by Russian mercenaries appearing outdoors the common chain of command. The Russian protection ministry, he mentioned, appeared to have been caught abruptly and compelled to make justifications for the assault after the very fact.

Late Friday night, the Russian authorities indicated that there was no sorrow over the Ukrainian prisoners’ loss. In a stinging submit on Twitter, the Russian embassy in Britain mentioned that fighters from the Azov Regiment, a unit that made up a big proportion of the Azovstal defenders, “deserve execution, however demise not by firing squad however by hanging, as a result of they’re not actual troopers. They deserve a humiliating demise.”

The Kremlin has a historical past of fabricating narratives to cowl up potential battle crimes. After a Russian antiaircraft system shot down a passenger airliner over Ukraine in 2014, the Kremlin contrived a collection of unique and ever altering explanations that by no means held as much as skilled scrutiny. At one level, Russian officers claimed that the plane, a Malaysia Airways jumbo jet with 298 individuals onboard, was really stuffed with corpses earlier than take off.

The Ukraine battle itself is premised on a Kremlin lie that Russian troops had been despatched to liberate the nation from a fascist junta that had established itself in Kyiv with the assistance of Western governments.

The assault this week got here as video circulated on-line that appeared to point out a Russian soldier castrating a Ukrainian prisoner of battle after which capturing him within the head. Ukrainian officers have vociferously condemned the violence; the video’s authenticity couldn’t be independently confirmed.

Michael Schwirtz reported from Odesa, Valerie Hopkins from Tivat, Montenegro, and Cora Engelbrecht from London. Eric Schmitt contributed reporting.