again, they may have been gone for days now. the ocean shield, an australian ship recorded something they re calling an acoustic event. that was quite separate than what the chinese heard. and it was quite some distance away. 300 miles or so, to be exact. there is yet this new mystery as well tonight. a senior malaysian government source is telling cnn that the aircraft steered a course up and around the tip of indonesia. very curious. it was long suspected but it is now confirmed and it effectively skirted indonesian air space. again, very curious. why would it do that? was it an effort to stay hidden? does that mean someone was flying it and intendingal along to have that very strange path? answering some questions with the black boxes would be hard. without them, nearly impossible. but investigators have little choice but to push forward at that point. cnn s jim clancy is covering that part of the investigation. he is live in kuala lumpur as he has been for the last month.