Coroner - Asiana 214 passenger killed by vehicle

>> Reporter: THEY RUSHED THERE, HOPING TO SAVE LIVES. NOW CONFIRMATION THEY ACCIDENTALLY TOOK ONE. >> THE CAUSE OF DEATH OF ASIANA FLIGHT PASSENGER YE MENGYUAN IS LISTED AS MULTIPLE BLUNT INJURIES THAT ARE CONSISTENT WITH BEING RUN OVER BY A MOTOR VEHICLE. THOSE INJURIES SHE RECEIVED, SHE WAS ALIVE AT THE TIME. >> Reporter: THE 16-YEAR-OLD FROM EASTERN CHINA WAS AMONG 35 MIDDLE SCHOOL STUDENTS AND TEACHERS TRAVELING TO A CALIFORNIA SUMMER CAMP, WHEN ASIANA FLIGHT 214 CRASH LANDED IN SAN FRANCISCO EARLIER THIS MONTH. THE BOEING 777 CAUGHT FIRE, AND IT IS BELIEVED FIRE SUPPRESSING FOAM SPRAYED ON THE BURNING PLANE MAY HAVE ALSO BLANKETED THE TEENAGER WHEN SHE WAS STRUCK BY ONE OR PERHAPS TWO EMERGENCY VEHICLES. >> OBVIOUSLY THIS IS VERY DIFFICULT NEWS FOR US. WE'RE HEART BROKEN. WE'RE IN THE BUSINESS OF SAVING LIVES, AND MANY LIVES WERE SAVED THAT DAY. >> Reporter: POLICE ARE INVESTIGATING EXACTLY HOW THE ACCIDENT OCCURRED. THEY HAVE INTERVIEWED MANY OF THE 140 TO 150 FIREFIGHTERS WHO RESPONDED AND ARE RECONSTRUCTING THE ACCIDENT. OFFICIALS SAY THEY STILL DON'T KNOW HOW YE CAME OFF THE PLANE, WHETHER SHE WALKED OR WAS EJECTED. >> MY UNDERSTANDING IS THAT SHE WAS NOT STANDING UP, SHE WAS ON THE GROUND WHEN OUR RIGS MADE CONTACT WITH HER, A RIG OR POSSIBLY TWO. >> Reporter: OF 307 PEOPLE ON BOARD, 304 SURVIVED. THE CORONER SAYS HE MET WITH THE FAMILIES OF ALL THREE GIRLS KILLED IN THE CRASH, THE FIRE CHIEF SAYS FIREFIGHTERS ARE WILLING TO DO THE SAME.