The two Asiana Airlines passengers who died in this weekend's fiery crash landing were identified as 16-year-old female students from China, according to officials and Chinese media reports.
Wang Linjia and Ye Mengyuan were part of a student group from Jiangshan Middle School in China's eastern Zhejiang province, according to Chinese media reports.
In a statement, China's Ministry of Education said at least 70 teachers and students from China were traveling to the US to take part in a summer program.
Asiana Airlines Flight 214 was carrying more than 300 people when it crashed at San Francisco International Airport, tore off its tail and burst into flames Saturday.
The crash injured 181 people. The injured were being care for at several hospitals and at least 22 were in critical condition.
NTSB investigators have recovered the plane's black boxes and they are now on the way back to Washington.
NTSB officials hope to interview the crew later today.
"We went out and looked at the accident aircraft. We have not yet talked to the pilot; we hope to do that in the coming days. But we have obtained the cockpit voice recorder and the flight data recorder, and they have been sent back to our labs in Washington. We hope that there is good data, good information on those, and we'll audition them today back at headquarters," NTSB Chair Deborah Hersman said on "This Week" Sunday.
The NTSB is working with Boeing, the FAA, as well as the Korean Air and Accident Investigation Board to investigate the crash.
"We have a lot of work ahead of us. We have teams that will be looking at aircraft operations, at human performance, survival factors, and we'll be looking at the aircraft. We'll be looking at power plants, systems and structures. And so we really want to make sure we have a good understanding of the facts before we reach any conclusions," Hersman said on "This Week."
FBI Special Agent in Charge David Johnson said Saturday that "at this point in time, there is no indication of terrorism."
Asiana President Yoon Young-doo said at news conference today that he didn't believe the crash was caused by mechanical failure or pilot error and that it would take time to find out what caused the crash, The Associated Press reported.
A government official involved in the accident investigation told ABC News that so far the airline has expressed their cooperation with the investigation.
The first meeting between accident investigators and Asiana is going on now, according to this official.
Flight 214's Crash Landing
The flight 214 originated in Shanghai, China, and had a stopover in Seoul, South Korea.
It was carrying 291 passengers, including an infant, plus at least 16 crew members, according to the airline.
An Asiana Airlines official in Seoul told ABC News that 141 Chinese, 77 South Koreans and 61 U.S. citizens were on board.
Vedpal Singh, a passenger who was on Asiana Airlines Flight 214, said he broke his collarbone.
"The moment it touched the runway there was bang and we we realized something has gone wrong, something terrible has happened," Singh said.
Aerials of the crash, provided by ABC's San Francisco station KGO-TV, showed the plane's tail severed from its body, as well as the majority of the aircraft's roof completely charred away. One of the plane's wings appears to have snapped upon impact. Debris from the crash landing was scattered across the airport's runway 28.
Benjamin Levy, who was also on the plane and said he's grateful to be alive.
"I mean when I saw the hole in the front of the plane on the roof I wasn't quite sure if it was the fire afterward or if something had happened before. I couldn't tell," Levy said.
A video posted on YouTube showed gray smoke billowing from the plane, which was lying on the runway on its fuselage. Chutes had been deployed from the plane's emergency exits.
A witness described to ABC News what he saw when the plane was landing.
"The nose of the plane was higher than usual for a plane coming in to land and I thought that was odd," Stephen Dear said. "It got closer and closer. I saw the back tail hit the ground."
Dear said the plane then "caught fire immediately."
Stephanie Turner saw the Asiana Airlines flight crash and she was sure that she "had just seen a lot of people die."
Turner said that when she saw a plane preparing to land on the runway, it looked as if it was approaching at a strange angle.