A $225,000 reward is now being offered for information leading to an arrest in the murders of two teenage girls in Delphi.

It was two years ago Wednesday that 13-year-old Abby Williams and 14-year-old Libby German disappeared.

The law enforcement community on Wednesday used the occasion to try and prime the pump for more information from the public.

Some 38,000 tips have already been received in the case, with a dozen or so new ones arriving daily.

But investigators have yet to receive the one tip that cracks the case, despite a reward of $225,000.

Officials spoke to the possibility that the person they were looking for might be looking in on today’s press conference.

“It’s the first thing that my simple brain thinks of in the morning, it’s the last thing I think of at night, and I know I represent everybody else that’s dressed like me today. If you’re watching, we’re coming. If you are watching, we’re coming. This county of Carroll and all that has happened here and all the sadness associated with this county is unacceptable in a civilized society,” Indiana State Police Superintendent Doug Carter said.

Carroll County Prosecutor Nick McLeland assured the community that the case has not gone cold.

“This case is not closed," he said. "We are not done with this investigation.”