Passengers aboard Malaysia Airlines flight 128 from Melbourne to KL helped deal with an allegedly mentally ill man who shouted he had a bomb and tried to enter the cockpit just after takeoff off from Melbourne Airport. The 25-year-old  economy passenger, a Sri Lankan national on a student visa, jumped up just after take-off and made the bomb threats as the plane was about 4kms out from Melbourne airport shortly after 11pm on Wednesday. He was brandishing a device now believed to be a Bluetooth speaker. Manodh Marks, who had been living in Dandenong and was discharged from psychiatric care on Wednesday,  now faces charges of endangering the safety of an aircraft and making false threats. The crew returned to Melbourne and performed an overweight landing on Runway 16 about 15 minutes after departure and the aircraft was taken to a remote part of the airport. Victoria Police Superintendent Tony Langdon told reporters the man left his seat, shouted that he had a bomb and tried to gain access to the cockpit area. He was restrained by passengers and crew. “The pilots then invoked their emergency procedures and returned the aircraft to Melbourne Airport,’’ Supt Langdon said. “Australian Federal Police and Victoria Police then responded with the special operations group entering that aircraft and removing that male from the aircraft.’’ The person was in custody and being interviewed by police. “What I can tell you about the male is his history would appear to have mental illness,’’ Supt. Langdon said. “We do not believe this to be terrorist-related at the moment.’’ Former AFL player Andrew Leoncelli told the ABC he went to help cabin crew after the man became agitated. "I ran to the front and confronted him around the corner and he was there and he was a tall guy, taller than me with a beanie on, wearing dark clothing, dark skin, carrying a giant thing, a very strange-looking thing with antennas coming off it, saying, 'I'm going to blow the plane up, I'm going to f***ng blow the plane up'," Leoncelli said. He said the man then ran to the back of the plane, where he was overpowered by other passengers and restrained. "Staff grabbed the object, which we're not sure what it was, he was claiming to blow the plane up with, and walked it back to the front of the plane." Police said later the man had an electronic device that people commonly carried and would not have raised concerns at airport security. "I think the thing that he had was a boom box so I think ...the threat was not actually genuine,'' Leoncelli later told reporters.  "I think it was a very scary thing but I don't think he genuinely had the capacity to hurt anybody on the plane.'' Photographs taken by passengers show armed police entering the aircraft after it landed to take custody of the man and the object. But questions have been raised about why it took police so long — about 90 minutes — to enter the aircraft. The plane’s pilots had radioed to say the passenger responsible for the bomb threat had been subdued but police said they were focused on getting everyone safely off the flight. “So for us, we had to take everything into account, including the possibility of co-offenders or, if there was an explosive device, the possibility of there could be other explosive devices that the sudden removal of the passengers could cause an issue with,’’ Victoria Police Chief Commissioner Graham Ashton told a media conference. Ashton said he appreciated that for passengers on the plane “to be minute could seem like an hour, could seem like an interminable wait’’ but he was satisfied the police response did not result in an unacceptable delay. Australian Transport Minister Darren Chester said security protocols requiring all passengers to be screened were working. He said security procedures were reviewed on an on-going basis and would be changed if there was new information or an emerging threat. “We have outstanding security protocols here in Australia and it is designed to keep the travelling public safe,’’ Chester said. “Now, we will have to look at this incident and review every aspect of it and then make an assessment about whether any changes need to be made.’’ Read: ES, EU discuss raising the bar on global aviation security. According to the Aviation Herald website, the Malaysia Airlines Airbus A330-300, registration 9M-MTI was climbing out of Melbourne's Runway 16 when the crew stopped the climb at about 6500 feet reporting a passenger had attempted to intrude the cockpit. In a statement Malaysia Airlines said: "MH128, which had departed Melbourne Airport at 11.11 pm and was scheduled to arrive Kuala Lumpur at 5.28am on 1 June, made a turn back to Melbourne after the operating Captain was alerted by a cabin crew member of a passenger attempting to enter the cockpit. "Malaysia Airlines would like to stress that at no point was the aircraft 'hijacked’. MH128 safely landed in Melbourne airport at 11.41pm. "Following the incident on MH128, the disruptive passenger has been apprehended by airport security. Malaysia Airlines together with the Australian authorities will be investigating the incident. “ A later statement from the airline said the cabin crew “with the help of one passenger’’  managed to restrain , handcuff and subdue the disruptive passenger. It said the flight and cabin crew would not be asked to operate another flight until further notice The delayed flight was rescheduled to depart 8pm Thursday and the airline said passengers with critical onward connections had been allocated seats on an earlier Malaysia flight. Australian security authorities had also screened all baggage and it was being transferred to the flights on which MH 28 passengers were rebooked. “An investigation led by Australian authorities is currently underway and Malaysia Airlines wishes to extend its appreciation to everyone involved during the emergency situation.'' it said. “Passengers have been sent to local hotels in Melbourne and will be departing to Kuala Lumpur throughout June 1.’’ Melbourne Airport closed temporarily as a result of the incident but subsequently reopened and operated normally on Thursday.