A mobile phone that was used in the murder of Local Government councilor Ranjan de Silva was recovered by the Police and the Navy from a canal in the Ratmalana area.
Ranjan de Silve is the father of Sri Lankan cricketer Dhananjaya de Silva.
Three suspects have so far been arrested in connection with the murder.
The Local Government Councillor, a member of the Sri Lanka Podujana Party, was killed in a shootout in Ratmalana earlier this month.