A Ukrainian intelligence official said that the country has repeatedly asked Russia to hand over the bodies of scores of prisoners of war who Moscow claimed were killed in the downing of a Russian military transport plane by Ukrainian forces.

Andrii Yusov, the spokesman for Ukraine’s military intelligence said in televised remarks late Thursday that Kyiv has urged Moscow to hand over the bodies of those who died in the January 24 crash, but it has refused to do so. He reaffirmed Ukraine’s call for an international probe into the crash that would determine whether the cargo plane carried weapons or passengers along with the crew.