LOUISVILLE, Ky. (WDRB) -- Authorities are steering $50,000 toward safety improvements at an Indiana hiking trail where two teenagers were killed six months ago.

Indiana is giving a $50,000 grant to the Delphi Trail Safety Task Force. The money will go toward new lights, cameras, trail markers, and Wi-Fi connections along the city's more than 10 miles of trails.

In February, 13-year-old Abby Williams and 14-year-old Libby German were killed while walking on the trails. Their murderer is still on the run.

What has gone before...

Abby Williams, age 13, and 14-year-old Liberty German were found dead on Feb. 13 in a creek off a hiking trail in Delphi. Authorities had released a grainy cell phone image -- taken by Liberty -- of a man they are calling a suspect in the case. They also released recorded audio of three words -- "down the hill" -- that they say were spoken by a suspect in the case.

A dramatic press conference was held in February, with officials pleading for information from the public -- at times getting emotional.

Indiana State Police Superintendent Douglas Carter said he was overwhelmed by the tragedy and evil of the case.

"Words tend to escape during these periods of times," he said. "I've only had a couple of other situations in my lifetime when I've been able to stand before you and say that. Why Libby? Why Abby? Why Delphi? Why Carroll County? Why the region? Why the state? Why even in the nation? I say that because this is a classic example -- a clear example -- that evil lives amongst us." 

"To the family of the community, the region, the state, as the leader of the Indiana State Police I say, I am so very sorry," he added.

Carter pointed to what he said was unprecedented time, manpower and resources being spent to solve the crimes -- resources that came from the local, state and federal levels.

"It's unlikely that any of you will ever see -- nor will we ever see or experience again -- the level of resources that is attached to this investigation," he said.

He pointed to the picture that had already been released.

"Someone knows who this individual is," he said. "Someone knows who this individual is. Is it a family member? Is it a neighbor? Is it an acquaintance? Is it an associate? Or maybe that one guy that lives over at that one place that's just kinda not right?"

"Maybe it's his jeans," he added. "Maybe it's his jacket or his sweatshirt. Maybe it's his shirttail. Maybe it's his posture. Maybe it's the right hand in his pocket."

"As poor as this picture is, somebody knows," he said.

And he had a message for the suspect:

"If you're watching, we'll find you."

He called on the public to be strong and recognize the importance of speaking out.

"Who's next?" he asked. "I hate to ask you that question. I'd give my life to not have to. But I know you've asked yourself that very question."

He asked the public not to get tired.

"We must keep our resolve for Libby and Abby. For this community. And frankly to ensure that good trumps evil -- and it will."

"We will stay committed -- with resolve very rarely exhibited with human behavior -- until this conclusion," he said. "Please be patient. Become our partners and communicate with us as often as you can."

He also said he had one last message for the deceased victims of the crime.

"And now from a very humble servant, that's the most blessed guy on this planet to represent the profession I represent, to Libby and Abby: It's my hope and my prayer that you're now experiencing God's promise of eternal peace."

Police are asking anyone who was parked at High Bridge Trail Head on February 13, 2017 between 1 p.m. and 5 p.m. to contact them. And if you can identify the man in the photo they released, please contact the Carroll County Sheriff's Department or the Delphi Police Department at 765-564-2345 or the Indiana State Police at 765-567-2125.  You can remain anonymous, if you request. 

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