INDONESIA's ambassador has asked the Australian Federal Police to explain why they are investigating the killings of five Australian-based journalists at Balibo 34 years ago.Primo Alui Joelianto said he rang the new AFP Commissioner, Tony Negus, yesterday to discuss the investigation.''I just wanted to seek clarification of why he took the decision to start the investigation, '' Mr Joelianto said. Mr Negus explained to him the investigation was based on information referred to the police by the NSW Coroner. ''It's the legal process,'' Mr Joelianto said. ''We can understand that.''The ambassador said the Indonesian Government was concerned about the investigation. ''It cannot be beneficial for our relations,'' he said. Mr Joelianto said Indonesia would not send its citizens to Australia for trial. The men were killed a long time ago, he said, and Indonesia had considered the case closed.Mr Joelianto said the Foreign...