According to court records, 19-year-old Matthew Durham (now 20) confessed to raping several young girls, forcing some boys to perform oral sex on him and even making other kids watch on a mission trip to Kenya. Courtesy to KFOR-TV.

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EDMOND, Okla. — A teenager faces a possible life in prison sentence after authorities say they learned about shocking crimes he allegedly committed on an African mission trip.

According to court records, 19-year-old Matthew Durham confessed to raping several young girls, forcing some boys to perform oral sex on him and even making other kids watch while volunteering at a Kenyan children’s home.

Durham was arrested on July 17 at his parents’ home in Edmond by federal agents, according to KOCO. He appeared before a United States Magistrate Judge in Oklahoma City on Friday afternoon. He is being held without bond in a federal detention facility and a preliminary hearing is scheduled for Aug. 1, according to officials.

“This is a young man in our community that made choices to exploit children in an orphanage,” said United States Attorney Sanford Coats. “It’s a true tragedy all the way around.”

Click here for the story from KFOR-TV in Oklahoma. Warning. The pictures of Durham with children may be disturbing.

The 19-year-old suspect traveled overseas with a group called Upendo, an organization that assists neglected Kenyan kids by providing food, housing, clothes and religion. According to KOCO-TV in Oklahoma, Durham volunteered with Upendo in June 2012, June 2013, December 2013, and from April 30 to June 17, 2014.

While Durham volunteered to travel overseas several times over the last two years, on his last visit, the criminal complaint alleges, “Durham requested to stay at the children’s home in an ‘overflow bunk’ rather than at an offsite facility.”

During that visit, several alleged victims claimed Durham “often touched them in a sexual manner or told them to touch themselves while he watched.”

Once confronted, Durham allegedly came clean.

“A caretaker at the orphanage noticed something wasn’t right and confronted Mr. Durham. He admitted to some of the acts,” said Coats.

The affidavit continues, “The victims are believed to be both boys and girls between the ages of four and nine, at least one of whom is HIV positive.”

Prosecutors say while the alleged sex crimes were committed overseas, Durham can be held accountable for the crimes in Oklahoma.

Durham is being held without bond.