I saw this earlier, who was appealing?
Was he appealing to get the sentence reduced and ended up doubling it, or was it the prosecutor/family trying to get it increased?
Pretty big face palm moment if it was the first one!
If I understand it correctly, the Prosecutor's Office appealed, as they felt the sentence was too light & may set a precedent for future sentences.
The revised sentence is the maximum allowable under law (15 years) minus time already served.
http://www.bbc.co.uk/news/world-africa-42107701