Turkey's Foreign Ministry summoned Sunday the Swiss ambassador in Ankara Walter Haffner over PKK sympathizers' Saturday rally during which they carried anti-Erdogan signs.A ministry official, who spoke on condition of anonymity due to restrictions on talking to media, said the ministry has reiterated its uneasiness to Ambassador Walter Haffner over the issue. 
Supporters of the PKK took part in the rally in front of the Swiss Federal Parliament building in Bern.During the rally, speakers called for a "No" vote on a Presidential referendum which will be held on 16 April in Turkey.

Source: QNA