New details emerged Sunday during the last day of investigators' testimony in the trial of Roman Zadorov, who has been charged with murdering 14-year-old Katzrin high-school student Ta'ir Rada on December 6 last year. "I felt hatred. I just wanted her to feel pain, but I didn't want to murder her," Zadorov told investigators in a recording played in the Northern District Court in Nazareth. The confession was played during the testimony of Ch.-Supt. Yoram Azulai, the head of the team that investigated the killing. In it, Zadorov said Rada called him a ben-zona (son of a bitch) and later reenacted how he stabbed the teenager with a knife. In his testimony, Azulai emphasized that Zadorov correctly identified the angle of the attack on Rada, something, he said, that only the murderer could know. He then walked the three-judge panel through the process in which Zadorov went to the nearby men's bathroom to clean himself up and then made himself a cup of coffee before going to meet his employer. The Russian immigrant said that when he was a child, a group of girls abused him, beating him on the buttocks and the testicles. Rada, he said, reminded him of one of those girls. Azoulai also addressed criticism that the investigative team has faced since Zadorov was indicted in February. The detective said he and his team had exhaustively investigated all angles, including claims that a satanic cult was behind the brutal murder. He said no one had forced Zadorov's confession by depriving him of food or by coaching him on what to say. Sunday's testimony concluded the witness stage of the trial. Rada's mother, Ilana, reiterated her belief that Zadorov was not her daughter's murderer. She told the press she believed that Zadorov was at the scene and was withholding information about the killing. Rada's body was found in the girls' bathroom at the Nofei Golan High School in her hometown of Katzrin on the Golan Heights. Since then, the investigation has been plagued by controversy, with parties ranging from Zadorov's defense team to Rada's parents claiming police were mishandling the case.