A 19-year-old labourer convicted on 14 counts of insulting the Johor crown prince last year has failed to reduce his two years detention sentence at the Henry Gurney correctional institute in Malacca.

The Court of Appeal today unanimously dismissed Muhammad Amirul Azwan Mohd Shakri's appeal. The teenager from Tumpat, Kelantan had already spent four months at the institute and another three months in jail.