▁occupied ▁capital , ▁rendered ▁the ▁milit ant ▁polity ▁of ▁P ann ai ▁vulner able ▁from ▁an ▁un protected ▁assault ▁from ▁the ▁back ▁fl ank . ▁The ▁Ch ola ▁inv aders ▁eventually ▁destroyed ▁the ▁polity ▁of ▁P ann ai ▁and ▁its ▁surv iving ▁soldiers , ▁roy als ▁and ▁sch ol ars ▁were ▁said ▁to ▁have ▁been ▁secret ed - out ▁east wards . ▁In ▁their ▁ 4 5 0 ▁years ▁of ▁occup ying ▁Sum atra , ▁they ▁refused ▁to ▁be ▁ens la ved ▁to ▁Islam , ▁T ao ism ▁or ▁H indu ism ▁after ▁the ▁polity ' s ▁dissol ution . ▁The ▁people ▁who ▁stayed ▁behind ▁in ▁P ann ai , ▁themselves , ▁have ▁an ▁or al ▁tradition ▁where in ▁they ▁said ▁that ▁the ▁high - bor ne ▁sch ol ars , ▁soldiers ▁and ▁nobles ▁of ▁P ann ai ▁who ▁refused ▁to ▁swe ar ▁alleg iance ▁to ▁a ▁tre acher ous ▁inv ading ▁emp ire , ▁faith fully ▁followed ▁their ▁k ings , ▁the ▁" d atus " ▁and ▁" f led ▁to ▁other ▁islands ." ▁ ▁Col on ization ▁So on ▁after ▁the ▁expedition ▁had ▁land ed , ▁the ▁Mal ay ▁migr ants ▁from ▁Bor neo ▁came ▁in ▁contact ▁with ▁the ▁native ▁people ▁of ▁the ▁Island , ▁who ▁were ▁called ▁At is ▁or ▁Ag t as . ▁Some ▁writers ▁have ▁interpreted ▁these ▁At is ▁as ▁Neg rit os . ▁Other ▁sources ▁present ▁evidence ▁that ▁they ▁were ▁not ▁at ▁all ▁the ▁original ▁people ▁of ▁Neg rito ▁type , ▁but ▁were ▁rather ▁tall , ▁dark