The European Union and authorities around the world will have to regulate big technology and social media companies at some stage to protect citizens, the deputy head of the European Commission said on Monday, Reuters reported.

First Vice President Frans Timmermans said introducing regulations would work better if online platforms, such as Google and Facebook, worked with authorities.

“At some point, we will have to regulate,” Timmermans told the World Policy Forum in Berlin. “The first task of any public authority is to protect its citizens - and if we see you (tech giants) as a threat to our citizens, we will regulate and if you don’t work with us, we will probably regulate badly.”

Last month, the EU accused Alphabet’s Google, Facebook and Twitter of falling short of promises to combat fake news before the European Parliament elections in May, after they signed a voluntary code of conduct to stave off regulation.

Facebook said on Monday it would increase efforts to fight misinformation before the vote and would partner with German news agency DPA to boost fact checking.