Supporters of former army commander General Sarath Fonseka try to block a water cannon truck during a protest against Fonseka's arrest in Colombo February 10, 2010. Sri Lanka's defeated presidential candidate General Fonseka on Tuesday was in the custody of the army he led to victory in a 25-year war in May, under investigation for "certain fraudulent acts and other military offences committed by him," the military said. REUTERS/Dinuka Liyanawatte (SRI LANKA - Tags: CIVIL UNREST POLITICS CRIME LAW)