Yahoo Japan Corp. said Wednesday it will delete hateful and defamatory comments from all of its online posting sites with the help of artificial intelligence, beefing up efforts to tackle cyberbullying after the suspected suicide of a reality television show star.

The operator of Yahoo online services is strengthening its monitoring of hateful posts following the death earlier this year of Hana Kimura, a cast member of the popular reality show "Terrace House," who had been the target of bullying on social media.

Yahoo Japan will release a list of expressions that could be taken as malicious and clarify the criteria for deleting. Posts that are judged harmful by AI will be automatically removed.