Facebook apologises for legal threats over Cambridge Analytica story – live updates

Social media giant's chief technical officer Mike Schroepfer questioned by MPs about the firm's impact on politics. Follow rolling coverage here

3.14pm BST

And that's it. The session is over, a little under five hours after it started.

3.08pm BST

Stevens moves on to Myanmar, where Facebook has been implicated in violence against the Rohingya minority.

"I went to the refugee camps last November. The UN has accused Facebook of playing a role in the violence, saying social media has been exploited to spread hate speech. Just last month the UN said your platform had morphed into a 'beast' that spreads hatred against Rohingya muslims."