Facebook has sued an analytics firm for misusing its data.
Rankwave has been accused of unlawfully using users' information to sell ads.
Facebook says the South Korean firm failed to co-operate with efforts to verify how compliant it's been with the social media network's policies.
They say Rankwave used more than two dozen mobile applications to track comments and likes on Facebook pages.

8 Israeli airstrikes hit Syria's Abu al-Duhur airbase, state TV reports
Two killed in high school shooting in southern Philippines
Pakistan top court orders ex-PM Imran Khan be moved to hospital from jail
Russian missile attack kills 10 in Ukraine's Kharkiv region, governor says
Trump says Iran won't make deal he thinks is needed
