Last instance body dealing with electoral disputes

Presidential  Elections Act, No.15 of 1981

15. (2). Where any nominationpaper has been rejected by the Commissioner under subsection (1), he shallinform the candidate or the person who had delivered such nomination paper thefact of such rejection. The decision of the Commissioner to reject suchnomination paper on any of the grounds set out I paragraphs (a) to (d) of subsection (1) shall be final.

Source:

http://aceproject.org/regions-en/countries-and-territories/LK/case-studies/presidential-elections-act-no-15-of-1981.pdf/view