Police Release Sketch of Suspect, 5 Months After Murder of Indiana Teens

The person depicted in this sketch is believed to be connected to the murders of Abigail J. "Abby" Williams and Liberty Rose Lynn "Libby" German.

A sketch has been released of a suspect wanted by Indiana and federal authorities in connection with the mysterious murder of two teens earlier this year.

The Carroll County Sheriff’s Department, FBI, Delphi Police Department and Indiana State Police are requesting assistance to identify the person depicted in this sketch, who is believed to be connected to the murders of Abigail J. “Abby” Williams and Liberty Rose Lynn “Libby” German. 

Read: Police Name Mystery Man Caught on Surveillance as Suspect in Murders of Teen Hikers

Abby, 13, and Libby, 14, were found dead on Valentine's Day, one day after they were reported missing by family members.

Police previously released a photo of a man they believe to be their one and only suspect.

The person depicted in the composite sketch is described as a white male between 5’6” to 5’10”, weighing 180 to 220 pounds, with reddish brown hair and eye color unknown.

"This sketch depicts a hat that may not be accurate," authorities said. "We ask that you focus on the person’s facial features."

The two friends were found murdered near a creek on a popular hiking trail.

A grainy image and haunting audio of the man saying "down the hill" were recorded on German's cell phone moments before they were killed.

A source familiar with the investigation described the full recording as "the stuff of nightmares."

People in the town of Delphi — population 3,000 — say they refuse to believe the suspect is one of their own.

Read: Did Murdered Indiana Teens Capture the Voice of Their Killer?

"Somebody knows this voice," one Delphi citizen told Inside Edition early this year. "Somebody has to know who this guy is. We are begging you, begging you to come forward. We need to find out who has done this to our girls."

The composite drawing is the result of information received during the course of this ongoing investigation.  Anyone with information about the murders or the person depicted in the composite sketch should call the established tip line at 844-459-5786 and can remain anonymous.  

Tips may also be emailed to abbyandlibbytip@cacoshrf.com.

Watch: How a Social Media Photo May Have Tipped Off Predator That Killed Girls on Hike