NHK has learned that police officers from Ukraine will visit Japan next month to learn skills to identify badly damaged human remains amid the war with Russia.

Sources familiar with the matter told NHK that the delegation of about 10 officers will arrive in early July and attend training sessions given by Japanese police.

The sources say the Ukrainian government requested the training through the United Nations Development Programme and other channels.

Ukrainian police said at least 2,800 deceased people remained unidentified as of March.

The sources say the Ukrainian officers will learn postmortem and forensic skills in Tokyo. They add that the group will also visit Fukushima Prefecture, where the officers will hear from local police about how they identified those who died in the 2011 massive earthquake and tsunami using DNA analysis and other methods.

The sources say Ukraine wants to use what the group learns in Japan not only to identify victims of the ongoing conflict but also to collect evidence of war crimes allegedly committed by the Russian military.