Ten months following the double murder of Indiana teens Abigail Williams, 13, and Liberty German, 14, state, local and federal agencies are still working to track down their killer.

“My fear is that we could be here 10 years from now, and we won’t know what happened or why,” says Abigail’s mother, Anna Williams.

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The girls’ bodies were found February 14, 2017, a day after the pair disappeared while hiking on public trails near the Monon High Bridge near their hometown of Delphi.

Shortly thereafter, Police recovered vital evidence in the double murder from Liberty’s smartphone: A grainy image of an unidentified man seemingly following the teens on the trail was found, along with a brief snippet of audio.

“Libby did get a video of the guy, secretly,” says her grandmother, Becky Patty. “You could hear him telling the girls to go ‘Down the hill.’”

Investigators say at least one person who was present on the trails on(the) day Abby and Libby were killed has come forward to say they saw the as-of-yet unidentified man there. A composite sketch of the man based on witness descriptions has been released to the public.

Liberty’s grandfather, Mike Patty, says “Somebody knows something. Nobody lives in total isolation in today’s world, and I’m asking that person, please help us out.”

“We don’t go anywhere, we don’t do anything that we aren’t looking for this guy(comma)” says grandmother, Becky.

How do the girls’ families say they’re coping with their loss?

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Anyone with information that might assist police in their investigation into the murders of Abigail Williams and Liberty German is asked to call the Delphi Tipline at (844) 459-5786.

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Indiana Man Revisits Trails Where His Granddaughter And Her Friend Were Murdered