The family of a Sri Lankan woman who died in March following mistreatment at a Japanese immigration center said she was "treated like a dog" after the government disclosed Thursday security camera footage of her final days.

Two weeks' worth of video footage showing Ratnayake Liyanage Wishma Sandamali, 33, before her death was edited to around two hours, but her family members, shocked by the content, could only get through around half of it after saying they felt unwell.

"Our sister was murdered. Anyone could see that her condition was deteriorating. She was not treated like a human being. We want to see the whole video, not just a part of it," Wishma's younger sister Wayomi, 28, told reporters as she wept loudly.