BEIJING -- Twelve people have been arrested on suspicion of using a live-streaming mobile app to spread pornography, authorities said Tuesday.

As part of the "Clean Internet 2017" campaign, China has increased efforts to address online pornography, according to the National Office Against Pornographic and Illegal Publications.

The public can provide information on individuals or companies suspected of violating pornography laws by calling 12390 or visiting shdf.gov.cn, the office said.