A Delphi, Indiana, man, Richard Allen, has been arrested for the 2017 murders of eighth graders Abby Williams, 13, and Libby German, 14, Indiana State Police Superintendent Doug Carter announced at a news conference Monday.
The 50-year-old was arrested Friday and has been charged with two counts of murder, Carter said.
If anyone else was involved, that person will be held accountable, Carter vowed.
Carter said “today is not a day to celebrate,” but called the arrest a “major step.”
“This investigation is far from complete,” Carter said.
The probable cause affidavit has been sealed, Carter said.
“The time will come when additional details can be released,” Carter added.