Turkish President Recep Tayyip Erdogan accused the United States of supporting Kurdish militants who, according to Ankara, executed 13 kidnapped Turks in northern Iraq, Reuters reports.

The Turkish authorities earlier announced that the militants of the banned Kurdish Workers' Party had executed 13 Turks, including the military and police. 

Washington said it would condemn the killings if reports that the party were responsible for the incident were confirmed.

Erdogan said the US statement shows that it supports the party and the Syrian Kurdish forces.