What to do if my father accused of a false case after 32 years of job

My father is a bank manager in a nationalized bank and he has been on this job for over 32 years.In April,2017 he had been suspended from his service because of an accusation of irregular transfer of funds for personal gain.But later it is found that one of my father's subordinates is behind this activities and they used my father's password to frame him. This culprit later accepts his guilt in front of bank's internal investigation authority and also clarified that he used my father's password to do that crime.In Feb,2018, Bank sent a letter for another hearing for the matter. But somehow on January 28th,2018 my father had a brain stroke due to high blood pressure and he was hospitalized.Currently he is fit but doctors say he needs more time for his hands to do fine movements like writing.But now they are trying to delay the matter and harassing us in the name of documents.I know there are highly experienced lawyers here, I request them that please help our father get justice.