A Chinese ship searching for the missing Malaysia Airlines plane in the southern Indian Ocean has picked up a pulse signal, Chinese media say. They say the signal has a frequency of 37.5kHz per second,
the same as those emitted by the flight recorders. However there is no evidence so far that it is linked to MH370.
Dozens of ships and planes have joined the search, with the operation moving into its most intensive phase before batteries on the data recorders fade.
The Chinese search ship Haixun 01 on Saturday picked up the signal at about 25 degrees south latitude and 101 degrees east longitude authority said.
"It is yet to be established whether it is related to the missing jet," it cautioned.
The flight is believed to have crashed in the southern Indian Ocean, although no confirmed debris has been found.
It is still not known why the plane diverted from its planned flight path from Kuala Lumpur to Beijing four weeks ago with 239 people on board.
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