"‪#‎Ajsoars‬ is in Heaven, where he belongs... ‪#‎ajsoar‬ ‪#‎P3‬ ‪#‎MyFirstSuperHero‬"

A.J. was diagnosed in June 2014, when he was just 6 years old.

The Peterson family received an outpouring of support through social media, as they publicly documented the young boy's heath struggles.

More trending stories

Peterson was a star running back for Georgia Southern from 1998-2001, and played for the Chicago Bears from 2002-2009. Peterson also had brief stints with the Minnesota Vikings and the Virginia Destroyers.

Supporters have been leaving condolences on the Facebook page AJ Soars, Prayers for AJ.

Featured

Prosecutor Skandalakis has previously suggested that pursuing criminal charges against President Donald Trump may not be feasible until after he leaves office in 2029. (Craig Hudson/Politico/Bloomberg via Getty Images)

Credit: Bloomberg via Getty Images