"After departing from Melbourne, the aircraft's systems indicated there was an engine fire, so it returned and landed," SAID  a spokesman for the Australian Transport Safety Bureau.

However, an inspection of the aircraft after it landed found no evidence of a fire on board, the spokesman said.Malaysia Airlines also tweeted that early inspections found no evidence of fire.

"More than 300 passengers were onboard the Malaysia Airlines flight from Melbourne to Kuala Lumpur," a spokesman of Metropolitan Fire Brigade (MFB) was quoted as saying.

Emergency crews were called to the airport around 2:20pm (local time).The spokesman said the plane dumped fuel before making the emergency landing about 3:00pm.

According to online trackers, the flight took several circles above Melbourne before landing.

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