An Oklahoma teen is scheduled to enter a plea to federal charges that accuse him of sexually abusing children at an orphanage in Kenya.Arraignment is scheduled Friday in federal court for 19-year-old Matthew Lane Durham of Edmond. Durham was indicted by a grand jury on three felony counts earlier this week that accuse him of traveling from Oklahoma City to Kenya so he could sexually abuse children. A federal judge has ordered that Durham remain in custody until his trial, which has not been set.Prosecutors have alleged that Durham engaged in sex acts with as many as 10 children aged 4 to 10 while volunteering at the Upendo Children's Home near Nairobi from April to June 2014.Durham faces up to life in prison if convicted.Crime footer