( CNN ) -- Myanmar 's Supreme Court rejected Friday an appeal by pro-democracy leader Aung San Suu Kyi to overturn her house arrest . A diplomat who attended the hearing and spoke on condition of anonymity confirmed that the appeal was unsuccessful . Suu Kyi , 64 , has one final avenue for appeal to a special court in Myanmar 's new capital , Naypidaw . The Nobel Peace Prize laureate 's house arrest was extended by 18 months last August after an incident in which uninvited American John Yettaw stayed at her lakeside home . Myanmar 's ruling military junta accused Suu Kyi of breaching the terms of her house arrest . She has been imprisoned or under house arrest for much of the past two decades , since her party the National League for Democracy won a landslide election victory in 1990 . The junta has never recognized the results , but has promised to hold fresh elections this year , although no date has yet been set . Suu Kyi is disqualified from standing because she was married to a foreigner . The NLD has still to clarify whether it will participate in the vote . CNN 's Dan Rivers contributed to this report .
Naypidaw 's the National League for Democracy rejects appeal by democracy leader Suu Kyi . Suu Kyi had sought to overturn her house arrest . Aung San Suu Kyi has one final avenue for appeal to a special court . Her house arrest was extended in August after an uninvited American stayed at her home .