The National Transportation Safety Board announced Saturday in a brief press conference that it was too early to tell the cause of the crash of the Boeing 777 at San Francisco International Airport, but it would be launching a full-scale investigation into the matter immediately.
NTSB chairwoman Deborah Hersman said the agency's investigation will look at all factors, including airport operations and human performance.
Asiana Airlines Flight 214 was en route to San Francisco from Seoul, South Korea, when it crashed upon landing. Video from the scene shows the plane's burned-out fuselage and the tail section completely torn off.
Officials say 291 passengers and 16 crew members were on board, including 61 Americans, 77 South Koreans, 141 Chinese and one Japanese passenger.
The San Francisco General Hospital and Trauma Center reports that it has received 10 patients -- eight adults and two children -- from the crash. All of those patients are listed in critical condition.