Police in Hong Kong have launched a hotline where residents can report breaches of the national security law imposed by Beijing earlier this year.
The law criminalises secession, subversion and collusion with foreign forces. It has silenced many protesters since it came into force.
Hong Kong residents can send images, audio and video files to the hotline.
Rights groups say they are concerned the service could be used to target those with opposing political views.
Hong Kong’s police department said on Facebook that the hotline allows people to report “national security” issues without sharing their personal details.
Residents can submit the information via the messaging app WeChat, email or text.
The hotline does not answer calls or provide a response, police said, adding that authorities would not collect any personal information of those who report breaches of the law. (BBC)