The Sun.No details surrounding the cause of his death have been released.'He will be greatly missed, but he will always be with us.' Sam Jr.'s high school friend Nick Mavrostomos told the newspaper.Sam made headlines in 2015 when he spoke out about Scientology - and the psychological toll it took on him - after he left the church that his uncle is famously devoted to in 2007.He also previously revealed that John supported him in different ways, including financially, claiming he would send him a monthly allowance of $1800.Sam's passing comes after John lost his wife of 29 years, Kelly Preston, on July 12 after a two-year battle with breast cancer.
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