meaningful mental abnormality that is predictive of future sexual violence, irrespective of the term used. Some courts have accepted the hebephilia diagnosis while others have not. In court cases where the term hebephilia is used, it is placed within the DSM category of paraphilia, not otherwise specified (NOS). The diagnosis of hebephilia was rejected in one United States federal court in 2009 for being a label, not a "generally accepted mental disorder" and because a mere attraction to pubescent adolescents is not indicative of a mental disorder. Although the court rejected the government's claim that hebephilia is a mental disorder, the government argued that hebephilia may at times fall within a DSM-IV category of NOS. The court was also unconvinced by this. Court cases One case that went to the courts due to the sex offender's hebephilia was Malaysian engineer Yap Weng Wah, who gained notoreity for raping a total of 45 boys aged between 11 and 15, with the majority of the victims—31 of them—coming from Singapore and the rest from Malaysia. Yap's rapes lasted two years and seven months from November 2009 to June 2012 before his arrest in September 2012, and he was assessed to have a high risk of re-offending when the High Court of Singapore received the psychiatric report which diagnosed Yap as hebephilic. Yap befriended his victims through Facebook and had used fake identities to slowly get to know his victims before he cajoled the boys into allowing him to have sex with them; the crimes had made headlines nationwide in Singapore and the case was known to be one of the worst sexual crimes committed against pubescent boys in Singapore. After pleading guilty to 12 out of 76 charges related to the sexual penetration of his victims, Yap was sentenced to 30 years in prison and received 24 strokes of the cane in March 2015. Also in Singapore, another hebephilic offender, Malaysian Clement Tan Jun Yan, was sentenced to 18 months' imprisonment with no caning on 1 April 2021 for molesting two boys aged 13 and 15 respectively between 2 August to 23 October 2020, and having touched their private parts without their consent. The 21-year-old man, who pleaded guilty to these molestations, had also committed two similar offences on two other boys prior to his capture and trial, and he admitted to having these hebephilic sexual interests and had viewed pornographic materials