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Oxnard Man Accused of Drug Trafficking Following Major Bust with Fentanyl, "Ghost Guns" Seized

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Published on October 18, 2025
Oxnard Man Accused of Drug Trafficking Following Major Bust with Fentanyl, "Ghost Guns" SeizedSource: Ventura County Sheriff's Office

An Oxnard man has found himself at the center of an intense narcotics bust. Irvin Ulisses Martinez, 37, was detained during a search warrant operation on October 16, where detectives uncovered an arsenal of weapons and a large stash of drugs, the Ventura County Sheriff's Office reported. According to KTLA, authorities found several hundred counterfeit M30 fentanyl pills and cocaine ready for sale in Martinez's vehicle, along with a loaded 9mm handgun.

The investigation, conducted by a coalition of local and federal law enforcement agents known as the Ventura County Combined Agency Team (VCAT), zeroed in on Martinez's suspected drug trafficking operations throughout Ventura County. Nixle reports indicated that after detaining Martinez, the detectives executed a subsequent search at his residence in the 1800 block of Diego Way. The search yielded additional cocaine, methamphetamine, more fentanyl pills, and items indicative of drug sales activities.

But the drugs were only a segment of the seizure. Martinez's home also contained a number of illegal firearms, four of which were classified as assault weapons under California law. Two AR-15-style rifles in various states of assembly and six guns sans serial numbers — the so-called "ghost guns" which are prohibited in the state — were seized. Furthermore, the Ventura County Sheriff's Office stated that the search team confiscated a short-barreled rifle, a silencer, and roughly 10 high-capacity magazines, among them a 50-round drum for a semi-automatic shotgun.

Following his arrest, the Ventura County District Attorney's office filed a criminal complaint against Martinez on October 17, as reported by KTLA. He remains in custody, with bail set and his next court appearance planned for October 20. The extensive collection of weaponry and controlled substances discovered has put Martinez in jeopardy of multiple narcotics and firearm charges, highlighting the larger issue of illicit drug distribution and the proliferation of untraceable firearms within the state.

While Martinez awaits his trial, Ventura County authorities continue to collaborate, tackling drug and gun violence in the region. VCAT's mission, as described in the Nixle release, is to diminish the impact of illegal drugs in Ventura County by focusing on major and mid-level drug offenders. All while ensuring the safety and well-being of its residents. Incentives for information leading to an arrest have been announced, with Ventura County Crime Stoppers offering up to a $1,000 reward for tips that contribute to solving such illicit affairs.