Conservative family-values advocate Josh Duggar, who was at the center of a child molestation scandal that led to the cancellation of his family's reality show "19 Kids and Counting," has entered rehab within a week after reports surfaced that he had been a subscriber to the infidelity-arrangement website AshleyMadison.com.

"Yesterday Josh checked himself into a long-term treatment center," his mother, Michelle Duggar, 48, wrote on her blog on the family website. "For him it will be a long journey toward wholeness and recovery. We pray that in this he comes to complete repentance and sincere change. In the meantime, we will be offering our love, care and devoted support to [his wife] Anna and our grandchildren as she also receives counsel and help for her own heart and future."

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Michelle Duggar did not disclose what type of rehab he was receiving.

StoryJosh Duggar: 'I have been unfaithful to my wife'

Josh Duggar, 27, admitted last week in addition to infidelity that viewing Internet pornography "became a secret addiction" for him "over the last several years." Duggar is married with four children.

"As parents we are so deeply grieved by our son's decisions and actions," Michelle Duggar additionally said. "His wrong choices have deeply hurt his precious wife and children and have negatively affected so many others. He has also brought great insult to the values and faith we hold dear."