By Foo Yun Chee and Huw Jones LONDON (Reuters) – Europes antitrust chief said on Monday he could investigate Googles YouTube if he saw any attempt by the company to abuse its dominant position in online video searching. The comments by European Competition Commissioner Joaquin Almunia came as he wraps up a separate case against Google, the worlds most popular search engine, which was triggered by complaints from Microsoft and others. We are receiving more complaints, for instance the way Google leverages the search engine, Almunia told a Chatham House conference. YouTube for instance, its another kind of activity where Google can also leverage their market power in search engine, and maybe this will give way to another investigation, he said.