Hi San,
There isn't any problem with handing some money to SSP Ramesh Kharel as a recognition of this honesty and hard work. But I would like to suggest that the reward be made not on behalf of Sajha. I have nothing against Sajha but it does not really represent a honorable/respectable institution or an online site. How about on behalf of Nepalese residing abroad. You can always say that the money was collected by using Sajha to get the words out (if you really want Sajha to get some publicity).
This is just to let the guy feel proud and honored so that he will continue the hard work and that others will follow on his steps.