MH370 search: Oceanographer on signal detected by ship

A Chinese ship searching for the missing Malaysia Airlines plane in the southern Indian Ocean has picked up a pulse signal, Chinese media say.

Oceanographer Dr Simon Boxall told BBC News that the 37.5kHz frequency was used by other devices, but if it proved to be emitted by MH370's flight recorder then the search would go "from virtually the impossible to the plausible".

"If this is the pulse, you're going from tens of thousands of miles to tens of miles... this becomes a viable search region."