The 62-year-old actor spoke out for the first time after the death of his 27-year-old son Harrison.
Wagner took to Instagram to express his gratitude towards fans who have shown his family love and support after Harrison's passing last month.
"Thank you all so much for the love and kindness that you've sent," he said in a clip filmed in an airport "I can't tell you how much it's meant to me.
He thanked fans "for the love and support you've sent me" and concluded his message by noting that their sense of loyalty was "huge.
According to a Los Angeles County Medical Examiner-Coroner report, per Us Weekly, Harrison was discovered in a Los Angeles parking lot in June.