A Malaysia Airlines flight on its way to Kuala Lumpur returned to Melbourne amid concerns of a possible engine fire.

Flight MH 148 landed at Melbourne Airport shortly after take-off, after circling the airport several times.

The pilot made the decision to commence an emergency landing after a warning light came on in the cockpit, indicated one of the engines was on fire.

It circled the airport several times before landing. (9NEWS)

MFB confirmed they were assisting with "an incident" at Melbourne Airport. (9NEWS)

Emergency crews have safely shut down the engine. (9NEWS)

The aircraft was required to dump fuel before it landed, which led it to circle Melbourne Airport at a low altitude before landing.

Emergency services were called to the tarmac where fire crews safely shut down the engine.

A flight radar map of the aircraft being forced to turn around. (Supplied)

Malaysia Airlines confirmed the aircraft was grounded for investigation. They said a preliminary inspection had revealed no physical evidence of an external fire.

“Safety is our utmost priority,” the airline tweeted this evening.

Passengers on board were understandably concerned with the situation.

“It was very scary. I was quite terrified,” one female passenger told 9NEWS.

All 300 passengers were safely disembarked the aircraft and it is now being investigated by engineers and ground personnel.

Melbourne Airport has provided overnight accommodation and cab fare for all passengers.