They had been arrested on March 3 at Pennyquick Road in the south Colombo ward of Wellawatta for alleged visa overstays.
"Six of the eight Indians arrested were found to have had their kidneys removed," the Colombo Crimes Division told the magistrates court in Colombo. The police has expanded the investigation to the ongoing kidney transplant racket.
Sri Lanka Health Ministry had initiated an investigation on the conduct of the local doctors following complaints by Indian police.
In January, it was reported that the Indian police had charged six Sri Lankan doctors for carrying out 60 kidney transplants.
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