Format of EU Zuckerberg session allows him to skip some questions

Mark Zuckerberg has apologised to European Parliament members for Facebook's role in the Cambridge Analytica scandal.

Update 7.15pm: Facebook chief Mark Zuckerberg admitted his firm needed to do more to tackle terrorism, hate speech and online bullying as he was questioned by MEPs.

Appearing before senior politicians in Brussels, Mr Zuckerberg also acknowledged the social media giant faced an "arms race" in efforts to prevent the platform being used to interfere in elections.