MONTICELLO, Ind. — Their 12-year-old son died while at Indiana Beach, now, the parents are suing the amusement park.

On July 27, Brayden Cooper collapsed after getting off the Hoosier Hurricane roller coaster, said WLFI.

Cooper’s autopsy revealed no trauma, injury congenital abnormalities or toxins. However, the White County coroner did say that Cooper had an upper respiratory infection at the time of his death.

Cooper’s family told WLFI he didn’t have any pre-existing medical conditions, and believe his death was because of the negligence at the park.

The family is seeking unspecified damages.