Members of reality TV's "19 Kids and Counting" clan, the Duggars, have responded to reports that Josh Duggar, the family's eldest child, had been accused of molesting five underage girls when he was a teen.

In a statement to People magazine Thursday, Duggar, 27, admitted that, "Twelve years ago, as a young teenager, I acted inexcusably for which I am extremely sorry and deeply regret. I hurt others, including my family and close friends. I confessed this to my parents who took several steps to help me address the situation. We spoke with the authorities where I confessed my wrongdoing, and my parents arranged for me and those affected by my actions to receive counseling. I understood that if I continued down this wrong road that I would end up ruining my life."

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His parents, Jim Bob Duggar, 49, and Michelle Duggar, 48, added in a joint statement to People, "Back 12 years ago our family went through one of the most difficult times of our lives. When Josh was a young teenager, he made some very bad mistakes, and we were shocked. We had tried to teach him right from wrong. That dark and difficult time caused us to seek God like never before."

Josh Duggar, who in June 2013 became executive director of the conservative-Christian Family Research Council's political action committee, resigned from that post Thursday. The FRC said in a statement on its website, "Today Josh Duggar made the decision to resign his position as a result of previously unknown information becoming public concerning events that occurred during his teenage years. Josh believes that the situation will make it difficult for him to be effective in his current work. We believe this is the best decision for Josh and his family at this time. We will be praying for everyone involved."

Josh Duggar and his wife, Anna, have three children and are expecting their fourth later this year. reported Thursday that police investigated Duggar in connection with sexually molesting five girls starting in 2002.