An unconscious 10-year-old girl was airlifted from the Six Flags Magic Mountain amusement park Friday afternoon, fire officials said.
The girl had just exited the Revolution roller coaster when she lost consciousness, but was still breathing, according to a statement from the theme park.
The girl was airlifted about 4:45 p.m., Los Angeles County supervising fire dispatcher Ray Dong said.
It was not immediately clear what caused the girl to lose consciousness.
"Our thoughts and prayers are with the guest and her family," theme park spokesman Sue Carpenter said in a statement.
Follow me on Twitter for more California breaking news: @ronlin