On Tuesday, a Malaysia Airlines 777 with 298 people on board crashed in eastern Ukraine.
U.S. officials confirm the plane was shot down out of the sky, but so far, officials can't say who was responsible for the tragedy.
The truly eerie coincidence: this was a Malaysia Airlines plane.
Just four months ago, another Malaysian airlines jet, Flight 370, went missing - and 133 days later, there is still no sign of the missing plane or any indication of why it vanished.
As families in Malaysia and around the world learn the fate of their loved one, Malaysian Prime Minister Najib Razak called for an international team to have full access to the crash site.
"We must and we will find out precisely what happened to this flight," he said." "No stone will be left unturned," he said.
In her first interview on the crash of MH17, Sarah Bajc, who lost her partner on flight MH370, speaks about how she felt when she first heard the news about the downed passenger jet.
There are new developments in the hunt for Malaysia Airlines Flight 370.
Officials have finally released key information about what happened the night that Boeing 777 vanished.
They say the jet was likely on autopilot for at least five hours, while the crew may have been unconscious, possibly from a lack of oxygen.
They also suggest the plane eventually ran out of fuel before spiraling into the ocean.
These new details have led authorities to a massive new search area. It's farther south and much larger than the previous search zone.
It's about 23,000 square miles, roughly the size of West Virginia.
Outfront, Richard Quest and CNN aviation analysts Arthur Rosenberg and Miles O'Brien.
It's been nearly four months since Malaysia Airlines Flight 370 disappeared, and now, Australia is about to start hunting for the missing jet in a whole new search area.
There are also new reports that suggest officials relied on faulty radar data. Officials had said Malaysian radar showed the missing plane dramatically changed altitudes, flying as high as 45,000 feet and dipping as low as 4,000 feet.
That information is apparently dead wrong.
According to the New York Times, the plane remained in controlled flight for hours after it lost contact.
Outfront, CNN aviation analyst Miles O'Brien.
(CNN) - Using dramatic music fit for a Hollywood epic, a video-led fund-raising effort hit the Web this week purportedly to help find answers about missing Malaysia Flight 370.
Several relatives of the 239 people on board appear in a video posted on the crowdsourcing site Indiegogo.
They say nothing, and stare into a camera, solemn-faced. They hold up pieces of papers with their missing relatives' names. "Please help us find the truth," one man's sign implores.
The site aims to raise $5 million.
"OUR effort will not be in opposition to the official investigation, but rather seeks to uncover clues not yet discovered, and to pursue that evidence without interference from parties who are also liability holders in this case," the page reads. "We hope to plug doubts, overcome shortcomings, and improve the number of actionable leads towards in the search for MH370. The accountability of the authorities remains undiluted."
For more information about the "$5,000,0000 Reward MH370 Campaign," visit: http://www.igg.me/at/reward-mh370
It's been nearly three months since Malaysia Airlines Flight 370 disappeared and now the most promising lead has been discounted.
A U.S. Navy official tells CNN the underwater pings thought to be from MH370 are not from the plane.
Australian authorities heading the search say they've been looking in the wrong place for weeks.
So will the missing plane ever be found?
In interview with CNN's Erin Burnett, the man leading the investigation, Chief Commissioner for the Australian Transport Safety Bureau, Martin Dolan says he is "absolutely sure" that the plane is not in the ping area.