The 16-year-old girl who was run over by a vehicle after the crash of Asiana Airlines Flight 214 was alive when she was hit, two sources close to the investigation into her death told The Chronicle on Thursday night.

San Mateo County coroner's investigators determined that Ye Meng Yuan died of blunt force trauma as a result of being hit by a vehicle, said the sources, who spoke on condition they not be identified because they were not authorized to speak publicly about the case. It's not known what vehicle hit the girl, but most rigs on the scene were San Francisco fire trucks stationed at the airport.

Coroner Robert Foucrault, reached late Thursday, would not comment on the results of an autopsy his office performed on Ye. He said he would announce his conclusions during a news conference Friday.