He then started practising law in Colombo , appearing in civil litigation cases in the supreme court , court of appeal , commercial high court and district courts .
Sumanthiran was called to the bar in 1991 .
Sumanthiran then started practising law in Colombo , appearing in civil litigation cases in the supreme court , court of appeal , commercial high court and district courts .
Sumanthiran was called to the bar in 1991 .