shield has detected signals consistent with those of aircraft black boxes. the audible signal sounds to me just look an emergency locator beacon. reporter: the ocean shield picked up two distinct pinger alerts here. these signals detected 350 miles away from an area where a chinese ship picked untwo audio signals on saturday. britons hms echo has been moved there to investigate. they do not believe it s related to the ocean field find. i d say it s unlikely. but in deep water, funny thing happen with acoustic signals. reporter: officials dress they need to find wreckage before they can confirm any of these ping, related to the missing plane. we haven t found the aircraft yet. we need further confirmation.
search for malaysia airlines flight 370. we have learned in the last couple of hours that a pinger locator has detected more audio signals from the southern indian ocean. pulses that are consistent with those emitted by aircraft flight recorders. now, these latest signals were picked up in the northern part of the search area by a u.s. pinger locator aboard the australian ship ocean shield. two distinct pinger returns were detected, which we re told could very possibly be from the missing airliner s two separate black boxes. but everyone is being very cautious at this point. including angus houston. he is the leader of australia s search organization. he said this could take some days to confirm whether the sounds are indeed from flight 370. but he says right now he is, quote, encouraged that we re very close to where we need to be. well, investigators looking for flight 370 say they now have a visual indication.
complete coverage straight ahead on cnn newsroom. all right. we re going to bring you now these dramatic new developments, rosemary. there is really no other way to describe it in this search for malaysia airlines flight 370. we have learned in just the last 90 minutes in fact that a pinger locator has detected more audio signals from the indian ocean, pulses that are consistent with those emitted by aircraft flight recorders. and here is what is key. the latest signals are picked up in the northern part of the search area where u.s. pinger locator, that s aboard the australian ship ocean shield. two distinct pinger returns were detected, which we re told could very possibly be from the missing airliner s two separate black boxes. but very cautious here. yes. and angus houston, the leader of australia s search operation, you see him there, says it could
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deployed from the australian defense vessel, ocean shield, has detected signals consistent with those emitted by aircraft black boxes. two separate signal detections have occurred within the northern part of the defined search area. the first detection was held for approximately 2 hours and 20 minutes. the ship then lost contact before conducting a turn and attempting to reacquire the signal. the second detection on the return leg was held for approximately 13 minutes. reporter: houston went on to say that these signals are consistent with the characteristics of an inflight data recorder and a cockpit voice recorder. so, incredibly promising development, but at the same time, they re urging caution. all of this still needs to be