Six people were killed today in clashes between groups backing rival candidates in Turkey 's municipal elections , which turned into a referendum on the rule of Prime Minister Tayyip Erdogan.

Security officials said four people were killed in a gun fight between two families in the village of Yuvacik in the eastern province of Sanliurfa, which borders Syria. Such clashes have occurred at previous local elections . In Hatay province, also bordering Syria, two people died in a gunbattle between relatives of two candidates in Golbasi village, the officials said. Candidates in the voting for these local officials are not party-affiliated. Tensions rose in Turkey in the build-up to the elections , with Erdogan trying to fight off graft allegations and stem a stream of damaging security leaks