Four of those arrested remain behind bars tonight in the Mariposa County jail and are now facing felony charges.

The Department of Fish and Game says this kind of illegal activity is threatening California's wildlife.

After a year and a half long poaching investigation, the California Department of Fish and Game has arrested five people, four of which are now facing felony charges of conspiracy to operate as hunting guides in the State of California without valid licenses.

According to The Department of Fish and Game, those four individuals were guiding bear hunts for profit in the Stanislaus National Forest and guiding wild pig hunts in San Benito County.

Now, after an extensive undercover operation conducted by The Department of Fish and Game, the necessary arrests have been made.

Department of Fish and Game Warden, Patrick Foy says, "A couple of undercover game wardens booked hunts with the guides, went out to observe their activity and over the course of the last year-and-a-half, put an investigation together to sew up all the seams and make it good and solid. Yesterday we served those search warrants to basically crush the ring that had developed since 2001."

That's when Donald Hennagan junior and his father, Hennagan senior were arrested for similar charges, in addition to operating an illegal commercial hunting club.

The pair was also charged with cruelty to animals, operating canned hunts, and releasing domestic pigs for clients to unknowingly pursue as wild.

But it wasn't until after our on-camera interview with Department of Fish and Game Warden Patrick Foy that we discovered that Donald Hennagan, Jr. was still listed on The Department of Fish and Game’s website as a "2007" licensed big game guide, six years after his 2001 convictions.

A Fresno branch of The Department of Fish and Game even referred Hennagan, Jr. to KSEE24, not realizing that he was currently serving time in the Mariposa County jail.

When we called Department of Fish and Game Warden Patrick Foy back, this is what he told KSEE24.

“These one’s were on there and shouldn’t have been. So yeah, I really don’t have a great answer for you as to why they’re on there after the 2001 convictions,” said Foy.

Michael Riddle, hunting guide and CEO of Native Hunt, says its mind blowing that an individual like this would be allowed to remain on the Department of Fish and Game’s website, after prior convictions.

Riddle says, “What the problem is, is that I’ll have to go through a rigorous grilling by potential clients, which I don’t mind, but the things is, is that it could make California guides Lose a lot of business."

The Department of Fish and Game, later told KSEE24 that Hennagan, Jr. was on the 2007 list of licensed big game guides because he forged his most recent license application, stating that he had no prior convictions.

The Department of Fish and Game said because of an unsophisticated computer system, background checks are not possible or ever done, meaning his information was simply input.

And he was issued his license.

He is now facing felony charges of perjury and expected to be removed off of that list tomorrow.

Click on the link to see Preston Phillips report.