A man accused of targeting federal immigration agents by masquerading as one himself finds himself in deep legal trouble. Prosecutors argue that his actions posed a significant threat to law enforcement personnel.

Jaime Ernesto Alvarez-Gonzalez, 53, has admitted to being in the United States illegally after overstaying a tourist visa many years ago. On Tuesday, he pleaded guilty to impersonating a U.S. Border Patrol agent in an effort to disrupt deportation activities.

Authorities have described his impersonation as a calculated and intentional act. On January 8, Alvarez-Gonzalez allegedly followed a genuine Border Patrol agent around San Diego, California. He did so in a black Ford F-150 that was modified to mimic an undercover federal vehicle.

According to the prosecutors, Alvarez-Gonzalez was in possession of firearms, a violation given his legal status. The U.S. Attorney’s Office for the Southern District of California has highlighted this aspect of the case.

The truck was designed to appear authentic at first glance, complete with a Border Patrol sticker, fake radio antennas, a dashboard lightbar, and handcuffs hanging from the rearview mirror. However, a closer inspection revealed a misspelled license plate frame reading “Ferderal” instead of “Federal.”

The truck appeared convincing at a glance, outfitted with a Border Patrol sticker, fake radio antennas, a dashboard lightbar and handcuffs hanging from the mirror, despite a license plate frame that misspelled “Federal” as “Ferderal.”

It worked well enough that the real agent believed he was being followed by another federal officer and pulled off his mission for safety.

According to court filings, Alvarez-Gonzalez narrated the encounter in real time, claiming he was “on patrol” as he tracked the agent through city streets. At one point, he pulled alongside the agent at a stoplight and began recording him, later following him into a gas station parking lot and declaring he would stay on his “target.”

Prosecutors say Alvarez-Gonzalez posed with official Border Patrol vehicles. (U.S. Attorney’s Office, Southern District of California)

Prosecutors say Alvarez-Gonzalez, wearing a face mask and a “thin green line” hat, was actively searching for federal agents involved in ICE and Border Patrol operations.

Prosecutors say Alvarez-Gonzalez recorded himself during the incident. (U.S. Attorney’s Office, Southern District of California)

When agents confronted him, the situation escalated quickly.

Authorities say he shouted obscenities, ordered agents out of the Linda Vista neighborhood, and then called in what he described as his “reinforcements.” Multiple vehicles soon arrived and people began harassing and chasing federal agents onto the highway — an encounter Alvarez-Gonzalez filmed himself.

He was arrested days later. But investigators say the impersonation was only part of the story.

A series of photos shared by prosecutors show Alvarez-Gonzalez handling firearms at a Houston-area shooting range after traveling to Texas, despite being barred from possessing weapons. In one image, he is seen holding a Kalashnikov-style rifle alongside a caption referencing “Pancho Villa” in the United States.

Vehicle used in the alleged impersonation featured a Texas plate labeled “Ferderal Truck.” (U.S. Attorney’s Office Southern District of California)

Additional images appear to show him displaying multiple rifles near a pickup truck and standing beside a Ford vehicle with a Texas license plate and markings resembling a “Ferderal Truck” label paired with a sheriff-style emblem.

Authorities recovered law enforcement-style items and plates from the defendant. (U.S. Attorney’s Office, Southern District of California)

Authorities say other photos place him in front of an actual Border Patrol vehicle and, in a separate shot, near a heavily secured stretch of the U.S.-Mexico border, where he is seen wearing what appears to be a vest and badge while standing by a “No Trespassing” sign.

Image shows Alvarez-Gonzalez near a restricted area at the southern border. (U.S. Attorney’s Office, Southern District of California)

Investigators say they also recovered an FBI-style badge and found that Alvarez-Gonzalez had access to firearms, including a Glock pistol, along with ammunition tied to weapons he was not legally allowed to possess.

Court documents further allege he tried to cover his tracks. While in custody, authorities say he called an associate and asked that law enforcement-style markings be removed from his vehicles. When agents later searched them, much of the apparent impersonation gear had already been taken off.

Following his guilty plea, Alvarez-Gonzalez now faces a potential sentence of up to 15 years in prison on the firearms charges alone.

Fox News Digital reached out to his attorney.