As police roll out their nationwide campaign against online rumors, experts have urged relevant departments to offer more details of cases being investigated, insisting that the process of tackling rumors should also be transparent.

Beijing police confirmed with Sina Weibo, China's largest micro- blog service, on Sunday that journalist Liu Hu has been detained on allegations of criminal fabrication and dissemination of rumors online. Liu works for Xinkuaibao, a local media company in Guangdong province.

However, police did not give any details on the case, such as which rumor Liu is supposed to have fabricated. Instead, they merely stated that the journalist's detention was in accordance with the law and that investigations are ongoing.