One of the members of the “Duck Dynasty” clan has opened up about a childhood secret. ET Online reports that Jep Robertson, the baby brother of the family featured on the A&E reality show, revealed a child abuse incident from when he was 6 years old.

“Opening up to ‘ET’ ahead of the release of his new book co-written with his wife Jessica — ‘The Good, the Bad, and the Grace of God: What Honesty and Pain Taught Us About Faith, Family, and Forgiveness’ — the 37-year-old claims he was molested by an older student when he was in grade school,” the story reports.

Jep tells ‘ET’ in the interview: “I was 6 and it was on a school bus and it was an older girl. Back then the high school students would ride on the same bus as the grade school. There was this girl there that was just real mean. … I don’t know, but it was a lot of things took place — scary stuff. It was tough.”

The report cites a passage in the book about the girl sitting next to Jep on the bus: “After a while the girl started doing strange things. She’d take my hands and push them up under her shirt and tell me I was tickling her. Then she started making me pull down my pants. It was awkward. I didn’t know what was going on, but I knew something wasn’t right.”

Jep kept the incident a secret until now.