ur ai ▁and ▁S iv ag ang ai ▁districts , ▁in ▁T amil ▁N adu , ▁India . ▁The ▁K ee zh adi ▁exc av ation ▁site ▁is ▁located ▁in ▁this ▁area : ▁exc av ations ▁carried ▁out ▁by ▁the ▁Arch ae ological ▁Survey ▁of ▁India ▁( AS I ) ▁and ▁the ▁T amil ▁N adu ▁Arch ae ology ▁Department ▁( T N AD ) ▁have ▁revealed ▁a ▁Sang am ▁era ▁settlement ▁dated ▁to ▁the ▁ 6 th ▁century ▁B CE ▁by ▁radi oc ar bon ▁d ating . ▁Cla ims ▁that ▁the ▁results ▁show ▁that ▁there ▁was ▁writing ▁at ▁that ▁time ▁have ▁been ▁challeng ed . ▁It ▁is ▁not ▁clear ▁whether ▁the ▁pot sh erd s ▁containing ▁ins cri ptions ▁were ▁found ▁in ▁the ▁same ▁arch ae ological ▁layer ▁as ▁the ▁ 6 th ▁century ▁samples , ▁and ▁University ▁of ▁Cal cut ta ▁arch ae ologist ▁B ish n up ri ya ▁Bas ak ▁said ▁that ▁This ▁unfortunately ▁is ▁not ▁clear ▁from ▁the ▁report ▁and ▁is ▁very ▁cru cial ,” ▁adding ▁that ▁the ▁issues ▁of ▁“ layer , ▁period ▁and ▁absolute ▁dates ” ▁needed ▁clar ity . ▁D rav id ian ▁University ▁arch ae ologist ▁E . ▁Har sha ▁V ard han ▁said ▁that ▁a ▁single ▁report ▁was ▁not ▁enough ▁to ▁" state ▁scientific ally ▁that ▁the ▁T amil - B rah mi ▁script ▁belongs ▁to ▁the ▁sixth ▁century ▁BC ”. ▁ ▁Ex c av ations ▁▁ ▁An ▁arch ae ological ▁survey ▁team ▁under ▁Arch ae ologist ▁Am arn ath ▁Ram ak