EUREKA, Mo. — Six Flags has introduced a new chaperone policy for attending Fright Fest this year.

Those 15 years of age and younger must be accompanied by a chaperone who is at least 21 years old, according to the policy.

The new requirement starts Friday, Sept. 13.

Chaperones must accompany their party during entry and remain inside the park and be available by phone throughout their visit.

Guests 16 years old or older may be asked to present a valid ID to verify age. If they are unable to verify proof of age, they may be denied entry, according to the policy.

This new policy requirement applies to all Six Flags St. Louis Fright Fest one-day ticket and season pass holders.

Additionally, guests are not allowed to re-enter the park during Fright Fest after 9:00 p.m. to park close.