A Hubei man has been jailed for one year for doctoring evidence to support his claim that his daughter had been sexually assaulted and murdered five years ago on the orders of a Laohekou city hotel owner. The Xiangcheng District People's Court in Xiangfan ruled on Tuesday that Gao Tianhu had falsified evidence by putting his own semen on his daughter's underwear in an effort to implicate Wang Shujun. On March 15, 2002, Gao's 18-year-old daughter, Gao Yingying, fell to her death from Ms Wang's hotel, where she had worked as a waitress. Her body bore suspicious marks and bruises, her trousers were unzipped and her shoes, belt and some buttons on her top were missing. The case has had a high profile on the mainland, where it has been seen as symptomatic of the judicial system's opaqueness. Police concluded that the woman committed suicide, but the family was not convinced and laid the corpse out in front of the hotel in protest. Around 100 police officers including armed police were despatched to take away and cremate the body. In a surprising move, the Laohekou government, rather than the hotel, paid the family 49,000 yuan to waive any further investigation. But the family kept the underwear and a third-party forensic test revealed traces of semen. However, the official investigation team concluded the semen was from Gao Tianhu. He and his wife, Chen Xuerong, were detained last July. Ms Chen has been released. The parents continued to petition for a fair explanation of their daughter's death and attracted considerable media attention. The verdict said Gao Tianhu slandered the hotel owner by accusing Ms Wang of inciting others to rape and kill his daughter, presenting false information to the media and forcing unnecessary police investigations. 'He violated Wang Shujun's civil rights and interfered with the affairs of judicial authorities to serious effect,' the court said. Wang Cailiang , a Beijing-based lawyer drafting an appeal for Gao, said there was not enough evidence to convict him. 'If the underwear was found to have Gao's semen, the key is to clarify when, where and how Gao left the traces,' he said. 'Gao did not confess to this, so the evidence must be crystal clear to convict him.'