Vietnamese aircraft has spotted what is suspects to be one of the doors of the Boeing 777, Malaysia Airlines plane that suddenly disappeared from radar with 239 people on board.

The plane lost contact with ground controllers somewhere between Malaysia and Vietnam. Searchers in a low-flying Vietnamese plane spotted an object that appeared to be one of the plane's doors. The state-run Thanh Nien newspaper reported this citing the deputy chief of staff of Vietnam's army.

Meanwhile, authorities were checking on the identities of the two passengers who boarded the plane with stolen passports. The thefts of the two passports, one belonging to Austrian Christian Kozel and the other to Luigi Maraldi of Italy, were entered into Interpol's database after they were stolen in Thailand in 2012 last year.

India is closely following the developments regarding the missing flight in which five Indian nationals were also travelling from Kuala Lumpur to Beijing and has assured their families of all assistance and support.

External Affairs Minister Salman Khursheed has said that the Indian High Commission in Kuala Lumpur was in constant contact with Malaysian authorities in this regard.