This article contains accounts of torture and sexual violence

Early one October morning in 2019, a group of men jumped out of a car and grabbed Liudmyla Huseinova as she left her home.

The 64-year-old says they seized her bag and threw her into the back seat, beginning what she describes as a “nightmare” in Russia’s secretive detention system in parts of Ukraine it had occupied since 2014: “For three years and 13 days of my life, my soul and body were crippled.”

She says that among the men was Yurii Temerbek, a Ukrainian who had been a local traffic policeman and had joined the Russian-backed separatists.

Temerbek – a husband, father and grandfather, now aged 56 - was there again, two weeks later, she says, watching as a man with a Russian accent sexually assaulted her in a notorious detention centre.