A federal aviation official says an Asiana Airlines flight has crashed while landing at San Francisco airport. It was not immediately known whether there were any injuries.
Federal Aviation Administration spokeswoman Lynn Lunsford says the Boeing 777 crashed at San Francisco Airport while landing on Saturday. The flight originated in Seoul, South Korea.
A video clip posted to Youtube shows smoke coming from a silver-colored jet on the tarmac. Passengers could be seen jumping down the inflatable emergency slides.
A Boeing 777 can hold more than 300 passengers.
Images are being broadcast of smoke coming from the jet, which landed just before noon.
Raw video from San Francisco International Airport