Mr Dervis makes no secret of his wish to work with Mr Cem as a possible coalition partner.

ECONOMIST: Turkey: A man for all Turks? | The

"We wish to determine whether those events were indicative of a pattern of behavior by agents or officers of the Secret Service, and need to be addressed systemically, or if they instead constituted an isolated incident warranting action only with respect to the individuals involved, " said the letter from Lieberman and Collins.

CNN: New investigation launched into prostitution scandal