SAN FRANCISCO (CBSNewYork/AP) – Hospital officials say a girl on the Asiana Airlines flight has died from her injuries, becoming the third casualty of the crash in San Francisco.

Dr. Margaret Knudson, San Francisco General Hospital’s chief of surgery, said the child died Friday of her injuries.

The girl had been in critical condition since arriving at the hospital Saturday after flight 214 crashed around midday, killing two others and leaving others in critical condition.

Officials did not identify the girl at the request of her parents. Her age also was withheld.

Meanwhile, San Francisco fire officials announced that one of two Chinese girls killed in the Asiana plane crash was already dead when airport staff found her.

Fire spokesman Mindy Talmadge said on Friday that the girl, identified as 16-year-old Wang Linjia, was found along with three flight attendants near a runway seawall. Linjia was not the girl that police said was run over by a truck.

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The National Transportation Safety Board says three flight attendants were flung from the back of the plane when it broke open. The attendants survived.

Linjia’s friend, 16-year-old Ye Meng Yuan, was hit by the truck while covered in firefighting foam. It is not clear whether she was already dead when the collision occurred or whether the truck killed her moments after Saturday’s crash.

Federal investigators looking into the crash have indicated that there did not seem to be any mechanical issues with the Boeing 777 jet, and that pilot error is likely to blame for the fatal crash-landing.

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