HELENA, Mont. -

The state Board of Chiropractors has revoked the license of Reese Riggin of Great Falls after two women reported he sexually assaulted them while performing chiropractic treatment he required them to receive as part of their employment.

A former employee filed a complaint against Riggin in January 2012 alleging he inappropriately touched her during purported chiropractic treatments and made sexual comments and asked her personal questions about intimate relationships.

The woman worked at Big Sky Chiropractic from March 2009 to September 2010. Another former employee testified that Riggin made similar advances toward her.

Attorney Steve Reida of Bozeman says Riggin denies the allegations.

Riggin lost his chiropractic license in Idaho over similar allegations in 1997. He was granted a probationary license in Montana in February 2008. It required he had to be supervised for at least a year.