Russian prisoners of war stand in line inside a detention center at an undisclosed location in the Lviv region, Western Ukraine, 03 August 2023. Russia and Ukraine have been accusing each other of abusing and mistreating their respective prisoners of war, prompting a UN investigation in early 2023. (Photo: EPA-EFE / Vitali Nosach) 
The statement from Cuba's foreign ministry gave few details, but noted the trafficking ring was operating both within the Caribbean island nation, thousands of miles from Moscow, and in Russia.
"The Ministry of the Interior...is working on the neutralization and dismantling of a human trafficking network that operates from Russia to incorporate Cuban citizens living there, and even some from Cuba, into the military forces participating in war operations in Ukraine," the Cuban government statement said.
The Russian government has not commented on the allegations.
Russia last year announced a plan to boost the size of its armed forces by more than 30% to 1.5 million combat personnel, a lofty goal made harder by its heavy but of yet undisclosed casualties in the war.
In late May, a Russia newspaper in Ryazan city reported that several Cuban citizens had signed contracts with Russia's armed forces and had been shipped to Ukraine in return for Russian citizenship.
It was not immediately clear if the Cuban foreign ministry statement was associated with the Ryazan report.
But Cuba's government said it had already begun prosecuting cases in which its citizens had been coerced into fighting in Ukraine.
"Attempts of this nature have been neutralized and criminal proceedings have been initiated against people involved in these activities," the Monday statement read.
(Reporting by Dave Sherwood and Marc Frank in Havana; Editing by Michael Perry)