BEIJING (AP) — Chinese web giant Sina.com temporarily closed its literature site Friday after reports it would lose two crucial publication licenses for hosting pornography.

Sina decided to take books off its site while it undergoes "a self-correction action" to screen their content, according to a notice on its reading channel. Book reviews, cultural news, author biographies and interviews were still available.

State media reported Thursday that broadcasting authorities had decided to revoke Sina's licenses on Internet publishing and online audiovisual broadcasting and impose "a large number of fines," while some of its employees were being investigated by police. This came after authorities allegedly found pornographic content on its literature and video sites. Sina's video site was still operating normally Friday.

The high-profile announcement is part of China's latest anti-pornography campaign amid a wider crackdown on online expression that has seen individual microblogs closed and punishments for spreading rumors online.

While the government periodically launches campaigns targeting obscene or improper content, this is the first time a major Internet company has faced such a heavy punishment, which will likely serve as a warning to other big players.

Sina has the right to appeal the decision.