Federal agents in Aurora recently made a significant arrest in connection with a suspected fentanyl trafficking operation. The suspect, Gerardo Ayub, a 34-year-old man from Missouri, was apprehended after allegedly delivering over 11½ pounds of suspected fentanyl to an undercover officer during a sting operation linked to a Mexico-based drug trafficking network.
Fentanyl, a potent synthetic opioid painkiller, is known to be 50 to 100 times stronger than morphine. It is often mixed into other illicit drugs, leading to dangerous overdoses among unsuspecting users.
The undercover exchange took place in a Walmart parking lot in Aurora, where Ayub met with the undercover agent to complete the transaction. The agent instructed Ayub to place a bag containing the fentanyl into the trunk of their vehicle and retrieve a bag of cash in return. However, the bag actually contained counterfeit money as part of the sting operation.
Upon realizing the fake currency, Ayub attempted to drive away but was quickly surrounded by agents and taken into custody. A subsequent search of his vehicle uncovered a bundle of the counterfeit money next to the driver’s seat, indicating his awareness of the ruse.
Further investigation revealed that the black plastic bag Ayub had placed in the trunk contained five brick-shaped packages wrapped in tan tape, consistent with kilograms of narcotics. Field tests confirmed the presence of fentanyl powder, weighing in at just over five kilograms.
This operation was part of a larger federal probe into a Mexico-based drug trafficking organization led by an individual known as “Cabrera.” According to a cooperating defendant, Cabrera is associated with the Los Cabreras cartel based in Durango, Mexico, which traffics significant quantities of fentanyl, cocaine, and methamphetamine into the United States.
HSI Chicago has been actively monitoring this group since at least October, working with cooperating sources to identify couriers and mid-level distributors operating in Illinois and beyond. The arrest of Ayub represents a significant step in dismantling this dangerous drug trafficking network.

