(AP) — A woman has died while riding an amusement park roller coaster in North Texas.

The incident happened just after 6:30 p.m. Friday at Six Flags Over Texas in Arlington. A statement issued by park spokeswoman Sharon Parker says the woman died while riding the Texas Giant roller coaster.

Parker didn’t specify how the woman died. A message left for her by The Associated Press wasn’t returned.

An Arlington police spokesman referred all questions to Parker. No other details were available.

Six Flags said it was closing the section of the park around the accident site temporarily but didn’t say for how long. It also expressed sadness over the accident.

The Texas Giant reaches 14 stories high and has a drop of 79 degrees. It can carry up to 24 riders.