Last week former Navy spokesman D. K. P. Dassanayake was arrested by the Criminal Investigations Department (CID) over the disappearance of 11 youth and was produced in court and remanded till July 19.
The youth had been reported missing between 2008 and 2009.
In 2015 the CID had questioned Dassanayake over allegations that some officers in the Navy were involved in the disappearance of several youth.
Last year, former Navy Commander Admiral Wasantha Karannagoda also appeared before the CID to make a statement over the disappearance of the youth.
CID sources said that more arrests are expected to be made based on the revelations made by Karannagoda.