The father of reality star Heidi Montag has reportedly entered a plea amid charges of child assault.

Heidi Montag Claims Lauren Conrad Tried To 'Ruin' Her Life

On Thursday, Denver Post reported that William Montag has pleaded not guilty to charges of aggravated incest and sexual assault on a child. Following his plea, a trial is set to begin this October.

TMZ reported in January that William was arrested by Aspen cops after being accused of abuse and incest on a 13-year-old girl. The accuser apparently claims that the incident went on until she was 17 and that it allegedly happened at least 50 times.

Heidi Montag's Father Arrested, Documents Tell Graphic Story

The documents say that William "groomed her with back rubs in her bedroom in the basement of their home" where a sex toy is said to be used. It was also said that the man allegedly crawled into bed with the young female where he pulled down her underwear and told her he wanted to have sex with her.

Authorities claim the victim said, "Get the hell out of my room, no!" where William's response was said to be, "I thought that's what you wanted. I thought you loved me the way I love you."

The site also pointed out that people are saying the alleged victim is "determined to destroy the family." They're also saying that the accuser has stalked Heidi and her husband, Spencer Pratt, at public appearances.

Heidi became a massive hit after her appearance on reality series The Hills.

Tags: Heidi Montag