More Felonies For Casper Man Accused Of Trying To Pull Gun During Drug Arrest

A 33-year-old Casper man already facing nine other drug and theft charges has four more felonies for allegedly dealing fentanyl and meth, along with trying to pull a gun on police during his arrest.

DK
Dale Killingbeck

March 13, 20243 min read

Casper’s Jesse Mostaert, who has a list of convictions, faces nine felony charges in Natrona County District Court.
Casper’s Jesse Mostaert, who has a list of convictions, faces nine felony charges in Natrona County District Court. (Cowboy State Daily Staff)

CASPER — A 33-year-old Casper man already facing theft and drug-related charges in Natrona County District Court has been hit with four more felony charges for alleged trafficking of fentanyl and meth. He’s also accused to trying to pull a gun on police during his arrest.

Jesse Alexander Mostaert was in court Monday to face two felony charges of possession of a controlled substance with intent to deliver fentanyl and meth, along with two other counts of conspiracy to deliver and a misdemeanor possession of anabolic steroids charge.

Mostaert was first arrested Feb. 8 by Casper police outside a South Walsh Street apartment in a 1987 white Chevrolet Astro van with a temporary Tennessee plate. He allegedly tried to pull a 9 mm handgun out of his waistband as he was being detained, according to an arrest affidavit filed in the case.

Wyoming Department of Criminal Investigation agents arrived and were informed that Casper police found a “blue in color pill” suspected to be fentanyl in Mostaert’s pocket, the affidavit says.

‘Thousands’ Of Ammo Rounds

Inside the van, Casper police found “thousands of rounds of ammunition of various calibers located in ammo cans and loose rounds,” as well as two vials of suspected anabolic steroids, which is a controlled substance, and a vial of testosterone enhancer.

Police also found “a small plastic bag with several pills of various colors suspected to be fentanyl and a small bag with what appeared to contain methamphetamine,” the affidavit states.

The affidavit states that a DCI agent attempted to speak with Mostaert, who declined to talk, but did identify two iPhones in his possession as belonging to him and gave agents the passcodes for access.

Special agents and Casper police obtained a search warrant for his residence and found a plastic bag located inside a microwave tucked into a hallway closet that “contained blue pills suspected to be fentanyl.” They also found another plastic bag “containing a white in color crystal-like substance suspected to be methamphetamine,” the affidavit states.

Field tests by the DCI agents on the suspected drugs showed positive results.

A later forensic review of Mostaert’s devices showed “communications consistent with selling fentanyl and methamphetamine.”

There also was an audio recording “in which a female states that she did not take his steroids,” the affidavit says.

Drug Slang

A DCI agent “observed the Google search history of Mostaert’s devices in which some of his pertinent searches were for ‘drug selling slang,’ ‘drug slang translator’ and searches related to firearms, include the make and model of the handgun located on his person,” the affidavit states.

The possession of a controlled substance with intent to deliver charges and the conspiracy to deliver a controlled substance charges all carry a maximum penalty of not more than 20 years in prison and a fine of up to $25,000. The possession of a controlled substance misdemeanor is punishable by not more than 12 months in jail an a $1,000 fine.

Bond was set at $40,000 cash or surety.

On Feb 20, Mostaert waived a preliminary hearing on nine other drug and theft charges stemming from an alleged pattern of shoplifting and drug dealing during a three-month period from Oct. 17, 2023, to Jan. 6, 2024.

Mostaert remains in the Natrona County jail.

Dale Killingbeck can be reached at dale@cowboystatedaily.com.

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Dale Killingbeck

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