Mark Middleton's family announced his passing on Saturday in a statement that notably refrained from revealing the cause of death.
The father-of-two lived in Little Rock, Arkansas, and local law enforcement and the county coroner revealed to DailyMail.com that they were not investigating the death and did not respond to it. The Middleton family has yet to reply to multiple requests for comment.
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For decades, Middleton ran an air conditioning business in Little Rock, but in the 1990s he was a special advisor to Clinton and finance director on his Presidential campaign. During that time Middleton admitted Epstein to the Clinton White House on seven of the alleged at least 17 times the late pedophile came to visit.
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Middleton also enjoyed flying on Epstein's private jet and appeared to have acted as a conduit between the two men.
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DailyMail.com has previously reported on how Epstein's access to the Clinton White House handed him access to a world of influence he would cultivate for the rest of his life and use to impress and threaten underage girls he abused.
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Middleton's death was announced in a Facebook post, which has since been deleted by the family's air conditioning company, Middleton Heat & Air. According to a report in Arkansas Business, the company was one of the largest HVAC providers in the state.
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The post read: 'The Middleton Family is saddened to share that Mark Middleton passed away this weekend.
'The Middleton family has lost an inspiring and dedicated leader and a son, brother, husband, and father. Mark leaves behind a company that he helped build from the ground up alongside his family and was proud to run for the last 25 years.
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'No words can express our sadness over this loss or our gratitude for your support and prayers during this time'.
Middleton was also a managing partner of the investment firm MidCorp Capital, an investment company, and worked for several different nonprofit foundations.
The only potential hint at a possible cause was a request in Middleton's obituary that, instead of flowers, well-wishers donate to a service specializing in counseling and therapy linked to the New Life Church, based in Arkansas.
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Middleton's life in recent years was a world away from the power he enjoyed in the 1990s.
White House visitor logs previously reported by DailyMail.com revealed that he appears as the authorizing authority on seven of Epstein's White House visits, most of which were to the West Wing.
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In addition to being a special assistant to the President, Middleton was also assistant to the chief of staff, Thomas 'Mack' McLarty,
Middleton left the White House in February 1995 and was accused of setting himself up as an international deal-maker, precisely the sort of person that would appeal to Epstein.
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In 1996 an investigation by the White House found that Middleton had abused his access to impress business clients and he was barred from the executive mansion without senior approval. Middleton denied the claims.
A spokesman for the Little Rock Police Department confirmed that they had not investigated the death.
The Pulaski County Sheriff's office also reported they had not responded to Middleton's death, and neither had the county coroner, according to an employee in the office reached by DailyMail.com.