In the 1990s, two Turkish scientists claimed to have seen dholes in northeastern Turkey. Some scientists believe they were true, but others question this claim. Also, one dhole may have been shot in the Caucasus Mountains in 2013; its remains (including a skull) were studied by a biologist in May 2015, who decided the skull was from a dhole. In August 2015, researchers from from Sofia, Bulgaria tried to find this population of dholes in Turkey. On October 12, 2015, this research team concluded that there is no clear evidence of dholes continuing to live in Turkey or the Caucasus Mountains.