Drone search for MH370 two-thirds complete

The Bluefin-21 underwater drone has combed about two-thirds of its search area as it continues its Indian Ocean hunt for the missing Malaysia Airlines jet.

The area, centred about 1500 kilometres northwest of Perth, has been narrowed to a 10km radius around the site of the second acoustic detection by a towed pinger locator on April 8.

Acoustic signals were also picked up in the vicinity on April 5.

No items of interest have been found so far, the Joint Agency Co-ordination Centre said.

The search on Tuesday is the ninth mission for the Bluefin-21.

Up to 10 military aircraft and 10 ships are also undertaking a visual search for floating debris from MH370, which disappeared from radar screens on March 8 with 239 people on board.

The weather forecast is for scattered showers with southeasterly winds, sea swells up to three metres and visibility of 4km.