A Chinese man who unleashed an online smear campaign against his ex-girlfriend saying she was a prostitute and deliberately spread HIV has been jailed for three years, state media said Saturday. Yang Yongmeng, 32, was convicted of aggravated defamation and sentenced in northern Hebei province last month, the official Xinhua news agency reported, quoting a local court officer. Yang distributed nude photos and compromising video footage of his ex-girlfriend Yan Deli on the Internet after she broke up with him in June last year, the report said. He also sent mobile multimedia messages to Yan's acquaintances and opened blogs on popular web portals in her name, uploading private video clips and claiming she had been raped by her stepfather and become HIV-positive. The blogs, which looked like they had been written by Yan but were in fact created by Yang, said she was spreading the HIV virus to new clients every day and was seeking fame on the Internet, the report said. Yang also published 282 mobile phone numbers saying they were 'clients' of the 'AIDS-infected prostitute,' it added. Police had found 157,000 web pages, 6,420 online reports and 735 video clips about the issue by late October last year. Yan became the subject of public vitriol when the photos and claims were first published online, but this soon turned to sympathy when it was revealed the whole thing was a hoax. She was forced to have three separate AIDS tests to prove she did not have the disease, the report said. 