(ABC 6 News) — It was a crime that shook the country, and on Monday, jury selection got underway in Indiana for the long-awaited Delphi double murder case.

Richard Allen is charged with the 2017 murders of 13-year-old Abby Williams and 14-year-old Libby German in the small town of Delphi.

The girls had disappeared after going for a hike. Their bodies were discovered the next day.

After five years, Allen was arrested after investigators linked a bullet at the crime scene to his gun.

Among the evidence expected in court is a picture that German Snapchatted of Williams near the trail as well as an image from German’s phone that police believe shows a suspect.

Allen has pleaded not guilty, and the trial is expected to last about six weeks.