The Police Financial Crimes Investigations Division (FCID) arrested him on 17 November 2016, after he tried to flee the country from Katunayake Airport, and was a suspect of allegedly accepting a
USD $332,000 commission while serving as the Sri Lankan Ambassador to the United States. He was remanded by the courts on the same day. It is alleged that the money was used to purchase a house in the United States for his daughter, Sarindee. An open warrant was issued in January 2018 in Colombo for his arrest in connection with those charges. He was allowed by Courts to travel for medical treatments, but later it was reported that he was missing and subsequently the court issued an open warrant. In April 2022, he pleaded guilty. According to Special Agent in Charge Ray Villanueva of HSI Washington, D.C., “Mr. Wickramasuriya attempted to use his position of authority to defraud his own government and steal from the people he represented. He did not expect the American authorities to get involved and call on HSI Washington, D.C. to investigate. Today he begins the process of paying for his crimes.” ==Accusation of money laundering==