Reconstructing the population history of Sinhalese, the major ethnic group in ÅrÄ« Laį¹ kÄ:
Interestingly, we found an unexpected excess of smaller chunks sharing between MarÄį¹hÄ and Sinhala (>16%) than the MarÄį¹hÄ and STU, thus supporting the linguistic hypothesis of Geiger, Turner and van Driem. To confirm the excess sharing, we looked for the population which was sharing maximum IBD with Sinhala and STU.
Looks like confirmation of Sinhala western Indian origins rather than eastern Indian origins.
did they cross compare with sufficient Bengali and other East Indian samples?