A man shot at a Texas trooper in San Antonio. His ankle monitor and a tipster led to his arrest.

A man accused of firing a shot at a Texas Department of Public Safety trooper on the North Side was wearing an ankle monitor at the time, authorities said.

Adrian Amador, 20, was arrested Tuesday and charged with aggravated assault with a deadly weapon. A judge set his bail at $250,000.

The day before his arrest, an anonymous tipster identified Amador to Texas DPS rangers investigating the case. The rangers reviewed his arrest record and learned he was wearing a GPS tracker, according to an affidavit supporting his arrest.

The shooting occurred Oct. 30 at about 5 a.m. in the 4300 block of Spectrum One. Investigators said GPS data placed Amador at the scene at the time.Court records also detail what led up to the shooting.

On Oct. 30, San Antonio police were investigating a string of vehicle burglaries in the parking lot of the Homewood Suites, 4323 Spectrum One. The affidavit does not identify who was responsible for the burglaries, but says high-powered rifles and other weapons were stolen.

One of the burglarized vehicles belonged to a state trooper. The stolen items also included specialized police equipment, such as body armor, gun sights and lasers.

The trooper whose pickup was burglarized called another trooper for help.

As the second trooper drove to the motel in an unmarked pickup, he saw a "low-to-the-ground" black, single-cab Ford pickup with a wheelbarrow in the bed. The trooper made a U-turn to get a better look.

One man leaned halfway out of the window and sat on the windowsill. He then pointed a gun at the trooper and fired, the trooper reported, describing a muzzle flash and the sound of a gunshot.

Neither the trooper nor his pickup was hit.

The pickup sped down Interstate 10, and the trooper lost sight of it at the Loop 410 interchange. Authorities tried to identify it by its license plate but could not.

Investigators learned about Amador through the anonymous tip Monday. They also learned he was out of the Bexar County jail on bond. He had posted bond in three separate arrests, including one on a separate charge of aggravated assault with a deadly weapon.

After his arrest, detectives questioned Amador about the shooting. He said he was in the area when it happened but denied taking part. He said he worked in landscaping and that a friend lived at a nearby apartment.

Amador also said he had left for Dallas at the time of the shooting and returned the morning before his arrest.

A threat and a viral video

Court records also detail a threat to kill a man and a viral video posted to Reddit that led to Amador's arrest in August.

On April 15, court records say, Amador was trying to steal a pickup while its owner was inside a grocery store. When the owner came out, Amador saw him and drove away in a gray Dodge Charger.

Amador left his cell phone behind.

The pickup's owner grabbed the phone and called 911. Before police arrived, Amador returned.

The owner recorded a video of Amador demanding his phone back. When the owner refused, Amador pointed a gun at him and threatened to kill him, San Antonio police said. Amador got back into the car and drove away.

The owner uploaded the video to Reddit, where it went viral, the affidavit states.

An anonymous tip to Crime Stoppers identified Amador as the man in the video.

Subscribe

There's more to San Antonio with the Express-News. Subscribe today for just 25¢.

This article originally published at A man shot at a Texas trooper in San Antonio. His ankle monitor and a tipster led to his arrest. .