A 60-year-old man who contested his 15-year incarceration for manslaughter at the Supreme Court has ended up with six additional years.The man, Gabriel Kwaw Bosu, was originally convicted for murder but the Supreme Court set aside his conviction for murder and reduced his sentence to 15 years in jail.But according to a Joy News report, Bosu, determined to get his conviction overturned entirely, filed another application for appeal.The court empanelled by five judges; Justices Georgina Wood, Stephen Brobbey, Julius Ansah, Anin Yeboah and Baffoe Bonnie upheld the decision of the lower court and added six more years to the convict’s term.Kwaw-Bosu begins his 21-years-jail sentence at the Nsawam Medium Security Prisons.