Matthew Tyler Henry went missing in April of 2018.

In the year and a half since his disappearance, Dunlap Police Chief Clint Huth says they've made new progress. 

He says in this case getting new information to get them closer to an answer is like a roller coaster.

"We'll have periods of time where we have a lot of information coming in and then it will kind of slow up, and then we'll follow those leads, and then it will pick back up as far as the information coming in," said Huth. 

He says there were points in the investigation they were hoping that Henry would turn up alive, but as time wore on they knew Henry wasn't just missing. 

"But we did get to one point into the investigation that we became extremely confident that this is a homicide," said Huth. 

Just over a year later the investigation got a boost when additional resources came into help. 

"Not long after the TBI came to assist us and the FBI once we got their assistance the information that has been coming in has greatly increased," said Huth. 

He says they're going to get to the bottom of it.  

"We believe we have a pretty good theory right now that we're following on that we believe at some point is going to come to a conclusion," said Huth. 

He says if you have any information, please call (423) 949-3319.

There is also up to $3,500 dollar reward for information in regards to this case.