The parents of a Georgia teenager found dead inside a rolled-up gym mat and their attorney must pay more than $292,000 in legal fees to dozens of people they accused of foul play in a lawsuit that was later dropped, a judge ruled.

The body of Kendrick Johnson, 17, of Valdosta was found in 2013 by classmates at Lowndes High School. Sheriff's investigators concluded Johnson died in a freak accident, stuck upside down and unable to breathe while trying to retrieve a shoe that fell inside the upright mat.

But Johnson's parents have long insisted he was murdered. Kenneth and Jacquelyn Johnson filed a 2015 lawsuit accusing two brothers of killing their son. They also said law enforcement and school officials covered up the crime.