Ukrainians are being arbitrarily detained and subjected to enforced disappearances in Russian-controlled areas.
At least 36 cases of civilian detentions were verified by the UN, with families often denied any information about the fate of those being held.
Ukrainians say they fear an escalating campaign of kidnappings and intimidation, as Russia struggles to assert control over towns it captures.
Viktoriia Roshchyna, a journalist, was working in occupied areas in the east of the country when she was taken by unidentified men on 15 March.
Her employer, Hromadske media, said she “was probably detained by the FSB”, Russia’s internal intelligence service, based on witness accounts of her being taken in the city of Berdyansk.
She was released six days later when a hostage-style video – apparently recorded under duress – began to circulate on pro-Russian Telegram outlets. In it Ms Roshchyna said Russia had not taken her captive and thanked Moscow’s forces for “saving her life”.
Editing by Omotola Oguneye