Artists and other celebrities in Japan were among millions of people who have been posting protests online against a government bill that could extend the retirement age of public prosecutors.

More than 3.8 million tweets were posted by Sunday afternoon with a hashtag that expresses opposition to the revision of the public prosecutor's office law.

HONG KONG/BEIJING — Autonomous driving firm Pony.ai said on Wednesday it has raised $462 million (425 million pounds) in its latest funding round, led by an investment by Japan's largest automaker Toyota.

Toyota invested around $400 million in the round, Pony.ai said in a statement, marking its biggest investment in an autonomous driving company with a Chinese background.