Posted Tuesday, March 11, 2014 --- 10:15 p.m.
Malaysian Airlines flight MH370 was scheduled to make a routine flight between Kuala Lumpur and Beijing nearly five days ago.
But the Boeing 777 never arrived.
Authorities are still calling the case a mystery, because nobody seems to know where the airliner is.
The airliner left no distress calls and the transponder showed no clear trace of the aircraft after about 90 minutes into it's flight.
Search crews and military forces from multiple countries have been scanning the waters along the planned route and beyond for traces of the aircraft carrying 239 people.
CIA director John Brennan also calls the case a mystery. "What we need to do is to see if we can recover the aircraft to see if we get some clues from that," Brennan said, adding that it's "truly disturbing".
New reports indicate the aircraft may have veered off of it's course by hundreds of miles -- that too, without explanation.
"I feel worried for the families," said Lik Sheng Ooi, a Malaysian student at UW Madison.
"Sheng", as he prefers to be called, is an undergraduate student who moved to Wisconsin two years ago.
A majority of the passengers on the flight were Chinese, but many of them were Malaysian, just like Sheng.
He said at first he though it was a hoax.
"It's a weird feeling because you feel detached from it and attached to it at the same time," Sheng explained.
Sheng has flown on Malaysian Airlines multiple times, most recently a few months ago on his way home for winter break.
He says that Malaysians appreciate the support, love and help that people all over the world are giving, but if there's one thing they need, it's answers.
"I feel that people would feel better eventually... if they know the truth," Sheng said.