Heidi Montag‘s father has been arrested on an oustanding arrest warrant for sexual assault on a child and incest charges, however the case does not involve The Hills‘ Heidi Montag Pratt or her sister Holly.

According to CBS4, William Montag, 67, was arrested Thursday at the Aspen Valley (Colorado) Ski and Snowboard Club, where he worked, on a failure to appear charge, according to jail records.

According to court records, William Montag has been wanted on a felony warrant from Centennial, a Denver suburb, for sex assault on a child by a person in a position of trust and a warrant was issued this past Monday.

An Aspen Police Department press release said William Montag was arrested and charged with three counts of sexual assault on a child by one in a position of trust and one charge of aggravated incest. Both charges are class three felonies.

.@heidimontag's father was arrested for the alleged sexual abuse + incest of a young girl -> http://t.co/AHFnrvwkej pic.twitter.com/U71a8YmHc8

— PopCrush (@PopCrush) January 31, 2015

The incidents involving William Montag allegedly took place between July 1, 1996, and June 30, 1998, and involves incest of a single victim who was between the ages of 14 and 17 when the alleged assaults occurred, according to Arapahoe County Sheriff’s Captain Larry Etheridge.

William Montag appeared with his daughter on an episode of The Hills, when he walked Heidi Montag down the aisle as she wed Spencer Pratt in 2009.

.@heidimontag's father has been arrested for doing a very, very bad thing: http://t.co/pa8Ky7jprL pic.twitter.com/aXDxyHyrth

— CELEBUZZ (@CELEBUZZ) January 31, 2015