Hong Kong media should ensure their coverage does not include false, biased, defamatory and misleading information, Chief Executive John Lee Ka-chiu has warned after a Chinese-language newspaper stopped running cartoons by controversial artist Zunzi.

Lee on Friday also defended a decision by public libraries to remove books by the cartoonist from their shelves the same day Zunzi was dropped by Ming Pao.

He said departments would from time to time review whether publications had “negative impacts on society” or breached the city’s laws.