Reports from Turkey say at least 41 people have been killed at a wedding party in the south-east of the country.
It is understood the families of the bride and groom clashed at the party in the city of Mardin.
At least three others were wounded in the shooting in the village of Bilge, an official said.
Local media said the fighting involved members of state-sponsored militia set up to combat local Kurdish separatist guerrillas.
In Ankara, Prime Minister Recep Tayyip Erdogan was briefed about the incident by Interior Minister Besir Atalay, a local news agency reported.
There was no official word on who might be behind the shooting.
Separatist Kurdish rebels are active in southeast Turkey, where they have waged a 24-year campaign for self-rule.
Blood feuds are also frequent in the region.