(Telecompaper) The European Commission has opened a third front in its competition investigation against Google. In addition to the earlier allegations of abusing its dominant position in comparison shopping sites and in the Android market, the Commission's latest accusation is that Google is holding on to its position in the search advertising market by preventing sites from displaying ads from Google's competitors. The EC sent two new statements of objections to Google. The first is a supplement to the original accusations from April 2015 in the comparison shopping market, to which Google replied in September 2015. Further investigation found additional evidence and data that reinforces the Commission's preliminary conclusion that Google has abused its dominant position by systematically favouring its own comparison shopping service in its general search results over those of competitors. The new statement of objections targets anti-competitive practices by Google's AdSense platform. Restrictions on third-party websites, preventing them from displaying search advertisements from Google's competitors, has enabled Google to protect its dominant position in online search advertising, the EC said. Google has ten weeks to respond to the objections.