Police in Indiana are investigating a new lead in the unsolved murders of two teenage girls nearly two years ago, according to officials.

Investigators said they’re looking into the possible link between the cold case and the Jan. 6 arrest of 46-year-old Charles Andrew Eldridge, a man with a resemblance to a composite sketch of the suspect in the February 2017 double murder, NBC News reported.

Eldridge’s arrest earlier this month in Randolph County on child molestation charges has no connection to the murders of 13-year-old Abigail Joyce Williams and 14-year-old Liberty Rose Lynn German in Delphi.

Abigail and Liberty were reported missing Feb. 13 after they failed to return from hiking the Delphi Historic Trail, which is located about 75 miles northwest of Indianapolis.

The teens left few clues besides an eerie audio recording on Liberty’s phone in which a man could be heard saying “down the hill.”

Their bodies were discovered the next day in a wooded area less than a mile from a bridge where they planned to meet their parents.

Liberty’s grandfather, Mike Patty, said he was hopeful about the new tip in the case, which has stumped authorities for nearly two years.

“Once we get that phone call that, ‘Hey, we’ve made an arrest and we’re confirmed,’ then I guess, maybe a celebration ain’t the right word, but a sense of relief that this guy’s been taken off of our streets,” Patty told NBC News.