A 10-year-old girl who lost consciousness on Friday while riding a roller coaster at Six Flags in Southern California has died.

Officials say that Jasmine Martinez of Somis was found unconscious but still breathing after she got off of the Revolution ride at Six Flags Magic Mountain in Valencia, California. She was then airlifted and taken to the Northridge Hospital Medical Center around 4:45 p.m.

Later, she was transferred to the Cedars-Sinai Medical Center, where she died the next day, said Ed Winter, spokesman for the Los Angeles County coroner's office, according to the Los Angeles Times.

Winter said that the cause of her death has yet to be determined and that an autopsy had not been performed on her body as of Monday morning. Winter, who works as the assistant chief medical examiner for Los Angeles County, added that it was not known whether the ride was a factor in her death.

"Our thoughts and prayers are with Jasmine's family and friends during this difficult time," the theme park said in a statement Monday.

The theme park also stressed that "there is no evidence to suggest that this was in any way ride related," in the statement, adding, "We do not know if there was a pre-existing condition," reports CNN.

More than 45 million people have "safely ridden" Revolution since it opened in 1976, stated the theme park.

According to the theme park, the roller coaster climbs up a 113 feet into the air before it swoops through slopes and a long, steep straightaway to a full 90-foot vertical loop. The theme park says the thrill ride races at speeds of 55 mph as "you rocket through narrow curves, soar over peaks, and plow through a tunnel, banking left and right like a pro."

The ride has been temporarily closed following the girl's death.