The ancestors of present-day Circassians are known as the Sind-Maeot tribes. Findings obtained as a result of archaeological research show that these tribes were the indigenous people of the Caucasus. Some researchers have claimed there may be links between Circassians and Indo-European-speaking communities, and some have argued that there are connections between Circassians and Hatti, who are from ancient Anatolian peoples, but these theories have not been addressed further and are not widely accepted. Within the scope of genetic tests performed on Circassians, the closest relatives of Circassians were found to be Ingush, Chechens and Abkhaz.