A Foreign traveller staying more than 30 days may eligible to apply for an extension of stays.
On first time extends 60 days, second time 90 days and third extend upto 90 days. Overall total 270 days applicant can stay from the date of first arrival.
Applicant should be visit personally visa section of Immigration department alternatively through immigration extension portal [extension].
If you unable to use the above services then you may proceed the any authorized agency.
Please note that applicant cannot apply for extension on this portal.