A guru convinced 400 men to cut off their testicles to bring themselves closer to God.
Gurmeet Ram Rahim Singh - the head of the socio-spiritual organisation Dera Sacha Sauda - allegedly told his 50 million followers to castrate themselves.
The guru, who has an estimated net worth of £26 million, was responsible for the incident, which took place around the year 2000.
However, the Sydney Morning Herald newspaper says people are only speaking out on the issue now.
Several of his female followers have claimed he sexually assaulted them, but he's never been convicted of any crime.
Meanwhile, Singh is currently being accused of grievous bodily harm by India's Central Bureau of Investigation.