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DELPHI, Ind.–Three years after Abigail Williams and Liberty German disappeared and were later found dead near Delphi, investigators are not talking about any new information. No news conferences were planned by Indiana State Police or the Carroll County Prosecutor’s office.

In April, state police released a second sketch of the person they believe killed the girls, which did not resemble the original sketch released in 2017.

They also released video of the suspect, along with an extra piece of audio.

“The video shows the suspect walking on the bridge. When you see the video, watch the person’s mannerisms as they walk,” encouraged State Police Superintendent Doug Carter.

“I want the killer to know that we know more than he thinks we know,” Carter told WISH TV this week. “I believe with every ounce of my soul that somebody’s living with this person and they know it.”

LINK: WISH TV’s story

Police did not say how the girls were killed. In April, Carter seemed confident that the killer was watching the press conference, either in the room or somewhere nearby.

“We also believe this person is from Delphi currently, or has previously lived here, visits Delphi on a regular basis or works here,” he said.

Carter said he believes the suspect is between the ages of 18 and 40, but might appear younger than his true age.

But, despite three years of investigating, the murders remain unsolved.

WISH TV’s Richard Essex contributed to this report