Malaysia's transport minister called the possible pings that might be linked to missing Flight MH370 the "most promising lead we have had" and he was unable to rule out that some of its passengers were alive. "Miracles do happen," Hishamuddin Hussein said at a media briefing on Monday. A pinger locator on an Australian navy ship searching for the missing Malaysia Airlines jet has detected signals consistent with transmissions from aircraft black boxes, said an Australian official coordinating the search. Air Chief Marshal Angus Houston referred to the detections as the "most promising lead and probably, so far, the best information that we have had" in the search for Flight 370. Houston cautioned that it may take days to confirm whether signals are from the voice and data recorders on the jet.