Police said there was likely more than one person involved in the ambush murder of Bardstown police Officer Jason Ellis.
The K-9 officer was gunned down on a highway ramp nearly one month ago after he got out of his patrol car to pick up debris.
Based on the circumstances, police said they believe at least a few people conspired to kill Ellis.
Chief Rick McCubbin said he has suspected that all along.
"Quite honestly, I hope there are because the more people, the more possibility of someone running their mouth, you know," McCubbin said.
Kentucky State Police said they have interviewed the woman who drove down the exit 34 ramp right before Ellis did.
So far, no arrests have been made in the case.
McCubbin said police want all of the tips they can get to find out who was behind the conspiracy to kill Ellis.
"Just looking at the totality of everything from the crime scene, how it was carried out, that I just felt that there had to be more than one person," McCubbin said.
McCubbin said the possibility more than one person is involved is bothersome and residents of the tight-knit community agree.
"It's really scary. You don't know where you're safe and where you're not safe," said Bardstown resident Deborah Miller.
"It does kind of scare me because I got kids, because I don't want them to be around none of that stuff," said Bardstown resident Daniel Ramirez.
State police have set up a special email address for tips in the investigation.
Tips can be sent to EllisCaseEtips@ky.gov.
"Nobody's giving up on it. Nobody," McCubbin said.
Police said they are working on multiple leads right now, hoping a process of elimination will help them find a suspect soon.
One of Ellis' sons will throw out the first pitch at the Reds baseball game on Tuesday night.
A fundraiser for the Ellis family will be held on Saturday are the River City FOP Lodge on Price Lane in Louisville.