By Bill Hudson

MINNEAPOLIS (WCCO) — For investigators in Barron, Wisconsin residents, it is nothing short of frustrating. Thursday marks one month since the murders of James and Denise Closs, with still no solid answers.

On a tragic and unfortunate anniversary, community members wore green on Thursday – the favorite color of the Closs family’s 13-year-old daughter Jayme, who mysteriously disappeared and has yet to be seen since the killings.

RELATED: ‘We Will Not Give Up’: Godmother Of Jayme Closs Speaks Out

The mood was grey Thursday in downtown Barron, much like the November skies. Thirty days have passed since the horrific crime, and still so much uncertainty.

“I lock the doors at night and make sure the windows are all closed,” said Barron resident Tom Jackson.

To help lift spirits and show their unified hope, local residents were asked to wear green. At the Barron city library, staff obliged. And like so many, they are praying that Jayme will still be found alive.

“Definitely, you know, the whole community is worried about Jayme and her family,” said a Barron librarian.

jayme closs sign in barron Barron Residents Wear Green 1 Month After Jayme Closss Disappearance

(credit: CBS)

Barron County Sheriff Chris Fitzgerald expressed his frustration to WCCO-TV.

“We still don’t know who the target was,” Fitzgerald said.

A team of county detectives, FBI and state DCI investigators are stitching together a timeline of security camera images. More than 80 separate videos taken from across the region will play out in a linear timeline to in hopes of capturing something suspicious,

Detectives have also analyzed the family’s cellphones, which unfortunately have revealed little out of the ordinary.

RELATED: ‘Your Dog, Molly, Is Waiting’: Relatives Of Jayme Closs Make Public Plea

“We continue to look over that, but there’s really nothing on any of their phones that shows, you know, ‘I was looking for help,’ or, ‘I was there to meet somebody,’ or, ‘Someone was coming over,’” Fitzgerald said. “There’s just not any footprint out there with any information that will help us.”

So as the Wisconsin deer season is set to begin on Saturday, hunters are being asked to be on the watch for anything suspicious or out of place. Possible evidentiary items include a piece of clothing, spent rounds or possibly a gun.

They are asking all hunters to closely observe their cabins, hunting shacks and properties and report anything suspicious.

A $50,000 reward is being offered for information that solves the case. Anyone with any information is asked to call 1-855-744-3879.