Diaries kept by the three Ohio women, who were held captive for decades by Ariel Castro, provide details of the abuses inflicted on them by the former school bus driver, prosecutors said Wednesday, in a sentencing memorandum.

According to Associated Press, prosecutors said in the memorandum that the women recorded in their diaries accounts of their “abuse and life as a captive” during the 10 years they were locked up in Castro’s run-down house in Cleveland.

"The entries speak of forced sexual conduct, of being locked in a dark room, of anticipating the next session of abuse, of the dreams of someday escaping and being reunited with family, of being chained to a wall, of being held like a prisoner of war," the memorandum said, according to AP.

Castro, who is being sentenced Thursday, has pleaded guilty to 937 counts of kidnapping, rape, assault and aggravated murder.

The three women -- Amanda Berry, Gina DeJesus, and Michelle Knight -- were kidnapped sometime between 2002 and 2004, and they managed to break free in May. During their decade-long captivity, Castro is said to have repeatedly starved and beat one of the victims whenever she got pregnant, forcing her to miscarry a total of five times.

During his sentencing on Thursday, Castro is expected to speak at length.

"(People will) see the other side of Ariel Castro ... not the monster that everyone thinks he is," Castro’s sister Marisol Alicea, told CNN on Wednesday night, adding that she was not defending her brother. "He must pay for what he did."

It is not yet sure if all the victims will attend the hearing. But, Knight, who was kidnapped first is expected to make a statement on Thursday, an official associated with the kidnapping investigation told CNN.

A psychiatric evaluation of all the victims showed that Knight suffered “the longest and most severely,” Frank Ochberg who conducted the tests, wrote in the evaluation report, according to CNN. “But it was Michelle who served as doctor, nurse, midwife and pediatrician during the birth (of Berry's child). She breathed life into that infant when she wasn't breathing."

"At other times, she interceded when Castro sought to abuse Gina, interposing herself and absorbing physical and sexual trauma. But each survivor had a will to prevail and used that will to live through the ordeal."