Police arrested a Casper man Thursday afternoon on suspicion of involvement in the theft of guns and body armor from parked cars earlier this week.

Casper police say Brendon Brimmer, 18, collaborated with two teenagers to plan the theft of an AR-15, at least one pistol and two ballistic vests from parked vehicles. The juveniles, who are 15 and 17 years old, had not been arrested or charged by Friday afternoon.

Assistant District Attorney Mike Schafer, who is handling the case, said prosecutors are considering charging the teens as adults due to “the serious nature” of the alleged crimes. He said early Friday afternoon that the district attorney’s office is in conversations with the Casper Police Department about how to handle the case.

A detective began investigating the case Wednesday after police received a pair of reports alleging overnight firearm burglaries from parked cars, according to court documents.

The owner of a car parked in Paradise Valley told police someone had taken a Colt AR-15 and two ballistic vests from the backseat of his car. Another person, whose truck was parked in the same part of town, said someone took a 9mm Smith and Wesson pistol from his center console, the documents state.

Police also received a third report of auto burglaries on 15th Street. The final report also described a person leaving the area in a small white SUV, according to the documents.

When a detective reviewed video footage from the Paradise Valley area, he spotted a similar SUV. Thursday, the detective spotted a similar vehicle in the parking lot of a local high school.

When the detective spoke with the SUV’s 17-year-old driver, the teen said he had driven another teen and Brimmer to both 15th Street and Paradise Valley on Tuesday night. The 17-year-old said Brimmer and the 15-year-old left the SUV to try breaking into parked vehicles, the documents state. He told the detective Brimmer and the 15-year-old brought the rifle and ballistic vests back to the SUV before Brimmer stole the 9mm pistol, according to the documents.

The documents state the 17-year-old later said the 15-year-old stole another pistol from an east Casper apartment complex. When police searched the 15-year-old’s Mills home, they found the AR-15, ballistic vests, a .44-caliber revolver, a pistol holster and multiple AR-15 magazines, the documents allege.

The 15-year-old told the detective in an interview he had helped the 17-year-old and Brimmer burglarize vehicles, according to the documents. He allowed the detective to look at his phone, which had photos of him holding the AR-15 and the 9mm and wearing a ballistic vest with the .44 tucked into it, the documents state.

The 15-year-old said he stole the revolver and the AR-15, but that Brimmer had taken the body armor and 9mm, according to the documents.

Detectives later found the 9mm pistol in the 17-year-old’s home, according to the documents.

The documents do not indicate if police believe Brimmer was involved in the theft of the revolver or if he spoke to detectives. He was expected to appear in Natrona County Circuit Court on Friday afternoon.

Court documents indicate Mills police officers and Natrona County sheriff’s deputies assisted Casper detectives working the case.

Casper police also issued a statement Friday afternoon asking residents to lock their vehicles and take valuables inside overnight to prevent auto burglaries. The release indicates the department typically sees a small increase in auto burglaries during the summer months.

A police spokeswoman said the statement was not issued as a result of the Thursday arrest but instead a reflection of general seasonal crime trends.

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Crime and Courts Reporter

Shane Sanderson is a Star-Tribune reporter who primarily covers criminal justice. Sanderson is a proud University of Missouri graduate. Lately, he’s been reading Cormac McCarthy and cooking Italian food. He writes about his own life in his free time.

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