The suspect, 50-year-old Richard Allen, was booked in Indiana around midnight Friday - though it remains unclear what exactly he has been charged with.
Shortly after the arrest of Richard Allen, 50, a photo emerged showing him posing with his wife with a suspect sketch from the investigation posted on a wall behind him.
A chilling photo shows the daughter Richard Allen, 50, posing on the train bridge where Libby German, 14, and Abigail Williams, 13, disappeared in 2017.
Richard Allen, 50, was taken into custody in Indiana on Friday.
It remains unclear what he has been charged with. Abigail Williams and Libby German, 14, were murdered in 2017.