Captain Mohamed Nilam, who was an intelligence official at the Sri Lankan embassy in Jakarta, has disappeared with his wife and children before termination of his term, government said.
Defence spokesman, Minister Keheliya Rambukwella told Sandesaya that Captain Nilam had gone missing two weeks before his term expired.
He said the Sri Lankan government had taken the issue on diplomatic level and informed security authorities in Indonesia.
As Captain Nilam has disappeared with his wife and children, the minister was asked whether the Sri Lankan government consider the officer had vacated his post.
"It seems that he has acted on an agenda of his own", Minister Rambukwella replied.
When told that Captain Nilam had been an LTTE target and it was the responsibility of the government to extend his term for security reasons, the minister said it was not only officer Nilam but there are also other officers whose security had to be ensured by the government.