here's one - Noel Crompton hall
*"Hall claimed he belonged in a female jail. In August 1999, the Serious Offenders Management Committee recommended he be moved to the all-woman Mulawa prison.
Although still a man, Hall was on hormone treatment but it did nothing to curb his behaviour as a sexual predator. He was charged with raping his cellmate. Other inmates reported Hall had sexually assaulted them."*
From another article *"In NSW parliament today, Opposition Leader Peter Debnam appeared to claim that one prisoner had fallen pregnant to Hall while the convicted murderer was held at Sydney's Mulawa women's prison.
"Yes, he/she attacked a number of women," Debnam told parliament.
"Yes, one of them ended up pregnant."*
Also look up violent rapist and murderer Richard Masbruch from the US who was moved to a women's prison and went on to allegedly commit sexual assaults. There was also another case from the US last year where the female inmates were being sexually harassed by male transgender inmates while showering.
Also in Canada "Jessica" (Christopher) Hambrook sexually assaulted women after gaining access to a womens shelter.
There are some sites that collate these kind of reports, off the top of my head, gender trender is one, and another is gender identity watch. They are certainly eye opening.