Identified as Charan, the wanted man is a closest supporter of former east chief minister Sivanesathurai Chandrakanthan alias Pillayan.

He has fled to Switzerland after the killing.

Three Navy personnel and a police constable are already under arrest over the gunning down of Raviraj.

Acting on information provided by them, the CID has found the murder weapon, and has also revealed the identities of the three wheleer driver who had taken the gunman for the shooting and the motorcyclist who helped him to getaway after the killing.

Two of those under arrest have agreed to turn state witness, and based on information given by them, a CID team is to go to Switzerland to arrest Charan.

Information has come to light that an LTTE leader of the east who had later joined the previous Rajapaksa regime had given the order to kill Raviraj, on instructions given by a top defence official at the time.