"Two more pings have been detected by the Australian ship Ocean Shield in the search for flight MH370. Air Chief Marshal (ret) Angus Houston, the head of the search's Joint Agency Co-ordination centre, announced the development during a press conference in Perth on Wednesday afternoon.
It revives hope the missing Malaysia Airlines plane's black box is still transmitting data days after its batteries were due to run dead.
Crew on the Ocean Shield deploy the towed pinger locator.
Photo: AP
Mr Houston said expert data analysis on previously detected signals had found they were not of natural origin, further boosting hopes of a breakthrough.