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.

US envoy Kellogg says Ukraine peace deal is really close
Benin soldiers claim to have seized power
Bus crash kills 14, injures 34 in Algeria
Fire in India’s Goa state kills at least 25
