Girl dies on flight from Los Angeles after going into cardiac arrest, authorities say

A young girl died after she went into cardiac arrest on a plane flight to Seattle from Los Angeles International Airport, authorities said.

The girl, believed to be about 10 years old, was on a Delta flight when she had the medical problem. The plane, which was still over Southern California, returned to the airport, KABC-TV reported.

Paramedics "furiously worked to save her life. Sadly, all efforts were futile and the child was beyond medical help," the Los Angeles Fire Department tweeted.

Airport officials said the girl died on the plane, KNBC-TV reported.

There was no immediate indication of anything suspicious about the death, authorities said.