The raid was carried out in relation to the murder of ,Loku Hakuruge Shantha, Hakmana Pradeshiya Sabha member for the Sri Lanka Podujana Peramuna(SLPP) .
Following the raid police has recovered a stock of army uniforms and 21 rounds of ammunition used for T-56 rifles.
The 53-year-old father of the suspect was arrested for interrogation.
Police said the shooter, Samantha Pushpakumara,who is a lance corporal attached to the Sapugaskanda Army Camp, is absconding.