Malaysia Airlines Flight 370 went down over the southern Indian Ocean, Malaysian Prime Minister Najib Razak said Monday, citing a new analysis of satellite data by a British satellite company and accident investigators.

The announcement appeared to rule out the possibility that anyone could have survived whatever happened to the aircraft, which vanished more than two weeks ago with 239 people aboard.

As Razak spoke, airline representatives met with family members in Beijing. "They have told us all lives are lost," one relative of a missing passenger told CNN.

The developments happened the same day as Australian officials announced they had spotted two objects in the southern Indian Ocean that could be related to the flight, which has been missing since March 8 with 239 people aboard.

One object is "a grey or green circular object," and the other is "an orange rectangular object," the Australian Maritime Safety Authority said.

The objects are the latest in a series of sightings, including "suspicious objects" reported earlier Monday by a Chinese military plane that was involved in search efforts in the same region, authorities said.

So far, nothing has been definitively linked to Flight 370.

Earlier, Hishammuddin Hussein, Malaysia's acting transportation minister, said only that "at the moment, there are new leads but nothing conclusive."

A reporter on board the Chinese plane for China's official Xinhua news agency said the search team saw "two relatively big floating objects with many white smaller ones scattered within a radius of several kilometers," the agency reported Monday.

The Chinese plane was flying at 33,000 feet on its way back to Australia's west coast when it made the sighting, the Australian Maritime Safety Authority said.

But a U.S. Navy P-8 Poseidon aircraft, one of the military's most sophisticated reconnaissance planes, that was tasked to investigate the objects was unable to find them, the authority said.

With the search in its third week, authorities have so far been unable to establish where exactly the missing plane is or why it flew off course from its planned journey from Kuala Lumpur to Beijing.

China has a particularly large stake in the search: Its citizens made up about two-thirds of the 227 passengers on the missing Boeing 777. Beijing has repeatedly called on Malaysian authorities, who are in charge of the overall search, to step up efforts to find the plane.

Malaysian and Australian authorities appeared to be more interested Monday in the two objects spotted by a Royal Australian Air Force P-3 Orion aircraft.

The Australian's navy's HMAS Success "is on scene and is attempting to locate the objects," the Australian maritime authority said.

Hishammuddin said Australian authorities had said the objects could be retrieved "within the next few hours, or by tomorrow morning at the latest."

Missing plane lost, Malaysia says

Malaysia's prime minister has announced on the basis of new analysis it must be concluded that missing flight MH370 ended in the southern Indian Ocean.

He said Malaysia Airlines had told the families of the 239 people on board.

Earlier the BBC saw a text message sent to families saying it had to be assumed "beyond reasonable doubt" that the plane was last and there were no survivors.

Flight MH370 went missing after taking off on 8 March.

The announcement by PM Najib Razak came on the fifth day of an international search effort in the southern Indian Ocean.

Based on new analysis the UK's Air Accidents Investigation Branch and Inmarsat, the UK company that provided satellite data, "have concluded that MH370 flew along the southern corridor, and that its last position was in the middle of the Indian Ocean, west of Perth," he said.

"This is a remote location, far from any possible landing sites. It is therefore with deep sadness and regret that I must inform you that, according to this new data, flight MH370 ended in the southern Indian Ocean."

PM Malaysia: MH370 Jatuh di Samudera Hindia Selatan

Jakarta - Pencarian pesawat Malaysia Airlines tampaknya mulai menemui titik terang. Perdana Menteri (PM) Malaysia Najib Razak mengatakan, penerbangan MH370 tersebut berakhir di Samudera Hindia Selatan.

Najib mengungkapkan hal itu melalui akun twitternya pada Selasa, (24/3/2013) malam. Dalam kutipannya, Najib mengatakan hal itu dengan penuh penyesalan dan kesedihan.

"Dengan kesedihan yang mendalam dan menyesal saya harus memberitahu Anda bahwa, menurut data baru ini, penerbangan MH370 berakhir di Samudera Hindia Selatan," demikian pernyataan Najib Razak.

Najib Razak akan memberikan pernyataan terkait pesawat MAS MH370 pada pukul 22.00 waktu setempat atau 21.00 WIB. Konferensi pers ini berlangsung di hari yang sama dengan pengumuman dari otoritas Australia terkait penemuan 2 obyek di selatan Samudera Hindia.

Seperti dilansir dari CNN, Senin (24/3/2014), PM Najib menyampaikan pengumuman itu lewat akun twitternya. Namun Najib tidak memberikan informasi detail terkait pernyataan yang akan diberikan.

Perkembangan ini terjadi di hari yang sama dengan pengumuman dari otoritas Malaysia terkait dua obyek di sisi selatan Samudera Hindia. Penemuan dua obyek ini bisa jadi terkait dengan pesawat yang telah hilang sejak 8 Maret 2014 tersebut.

Benda itu salah satunya berwarna abu-abu atau hijau dan berbentuk lingkaran. Satu lagi dipastikan berwarna oranye berbentuk persegi. Hal ini disampaikan PM Australia Tony Abbott di depan parlemen.

Menurut Abbott, dua temuan baru ini berbeda dengan laporan sebelumnya yang disampaikan kru pesawat China Ilyushin IL-76. Beberapa benda lain berwarna putih dan oranye juga ditemukan, namun ukurannya relatif kecil.

"Kami tidak tahu apa ada salah satu dari obyek ini dari MH370. Bisa saja itu serpihan dari kapal," ujar Abbott.