Exactly, Its better to let a hundred murderers walk free than to execute one innocent person. In a country like Nepal where there are no forensic capabilities and where judges have a price, one could use a million or so rupees to eliminate somebody else.

An inmate on death row is a huge burden to the state due to the unending mire of courts, appeals, evidence, re-appeal, new evidence, changing statements. Nowadays these can also carry racial tensions if a person of a certain caste is convicted while the victim is from a different caste. For example if a Madesi is convicted of raping a Pahade girl and then is put to death, it could very well instigate ethnic riots.

There are unintended consequences to very harsh laws, especially in a country where 'integrity' of one person is just another word that gets in the way of everyone else