Crime Stoppers Tip Unravels Six-Month Drug and Gun Ring Inside Cedar Park Apartment

A Tip That Triggered a Six-Month Investigation

What started as an anonymous phone call ended with a massive drug and weapons haul at a Cedar Park apartment complex. A months-long narcotics investigation by the Williamson County Sheriff's Office Organized Crime Unit culminated on July 6, 2026, when detectives served a search warrant at the Bexley Apartment Complex at 2801 S. Lakeline Blvd. — an investigation that began with a Crime Stoppers tip received back in January 2026. It's a striking reminder of just how much a single community tip can set in motion.

Three suspects were taken into custody: Sergio Madrigal, 19, and Jessica Carrese, 20, each face charges of manufacture and delivery of a controlled substance for cocaine, psilocybin mushrooms, alprazolam, and THC wax, along with possession of marijuana. A third suspect, Angel Rosas, 20, was charged with possession of a controlled substance related to THC vapes. All three are young adults — the oldest just 20 years old — a detail that underscores growing concerns about youth involvement in organized drug distribution.

What Detectives Found Inside

The scope of what investigators discovered inside the apartment was staggering. During the search, detectives seized approximately 10.4 grams of cocaine, 25 ounces of THC wax, 1,208.4 grams of alprazolam pills, 772 grams of THC vape products, about 1.2 pounds of psilocybin mushrooms, and 50.56 pounds of marijuana. The sheer variety of substances — spanning prescription-style pills, psychedelics, and large quantities of cannabis products — suggests an operation catering to multiple drug markets simultaneously.

The firepower recovered was equally alarming. Investigators recovered nine handguns, along with a Mossberg shotgun, three AR-15-style rifles, and a Draco AK-style pistol. They also seized $44,522 in cash, a digital scale, and multiple cellphones — the classic toolkit of an active distribution network. The combination of heavy weaponry and large amounts of cash points to an operation that was well-resourced and, by all appearances, prepared to protect itself.

Charges, Bonds, and What Comes Next

The legal process moved quickly after the July 6 raid. Madrigal was booked into the Williamson County Jail on July 7 and released on a $100,000 bond on the cocaine charge on July 8. The four other charges against him are listed as "no action-undecided prosecution" in county jail records. The prosecution's next steps on the full range of charges will be closely watched as the case develops.

The sheriff's office said the case underscores the Organized Crime Unit's commitment to dismantling narcotics trafficking operations in Williamson County, and Sheriff Lindemann recognized the work of detectives involved in the investigation. The department also credited the community, noting: "We appreciate our community for staying vigilant, reporting suspicious activity, and working alongside us to keep our county safe."

The Power of Community Reporting

Perhaps the most important takeaway from this case is how it started — not with a surveillance operation or a traffic stop, but with a neighbor or community member picking up the phone. A single January tip triggered nearly six months of detective work, ultimately pulling 14 firearms, multiple drug types, and nearly $45,000 in cash off the streets of a residential neighborhood. That's a significant return on one anonymous call.

Anonymous tips can be submitted to the WCSO Organized Crime Unit Tipline at (512) 943-1170 or by emailing drug-humantraffickinginfo@wilco.org. As prosecutors decide how to proceed on the full slate of charges against all three suspects, this case will likely serve as a template for how community engagement and sustained investigative work can dismantle drug operations hiding in plain sight within ordinary apartment complexes.