CHICAGO (CBS) — The arrest of a Mexican man for driving without a valid license and a fake passport led north suburban police to drug busts that yielded between 600-700 pounds of marijuana with a street value of about $3 million.

Jose Avila-Zumadio, 32, of Guadalajara was stopped for a moving violation about 4:15 p.m. Oct. 7 near Route 134 and Fairlawn in Round Lake Park, according to Round Lake Park police.

Jose Avila-Zumadio | Pound Lake Park Police Dept.

He was eventually arrested for not having a valid license, and while police were inventorying his vehicle, they found 3.25 pounds of marijuana with a street value of about $15,000, and about $1,900 in cash, police said.

Avila-Zumadio, who had a forged Mexican passport, was then charged with felony counts of possession of cannabis, possession with intent to deliver, and forgery, police said.

An investigation into Avila-Zumadio’s activities led to the execution of simultaneous search warrants on Friday by police from Round Lake Park, Round Lake Beach and a Lake County Sheriff’s K-9 Unit.

An AR-15 rifle with extended magazine and several boxes of ammunition were found when during a search of a storage unit suspected of containing marijuana on Friday in Round Lake Park. | Round Lake Park Police Dept.

Those searches turned up nearly 600 pounds of cannabis, with a street value of about $3 million; an AR-15 rifle with advance sighting and a loaded 30-round magazine; three boxes of 20 rounds of ammunition; and $6,861 in cash in a storage unit in Round Lake Beach, police said.

“It took literally three of us to open the door because it was so jam-packed with marijuana,” said Round Lake Park Police Chief George Filenko.

Maria T. Villa-Mauleon, 30, of the 400 block of Meadow Green in Round Lake Beach was arrested and charged with possession of cannabis with intent to deliver, a Class X felony; possession of cannabis over 5,000 grams, unlawful use of a weapon, possession of a weaon with a valid FOID card, unlawful possesssion of ammunition, and child endangerment, police said.

Maria T. Villa-Mauleon | Round Lake Park Police Dept.

Villa-Mauleon is being held at Lake County Jail on a $1 million dollar bond, while Avila-Zumadio is being held on $500,000, police said.

Filenko said this is one of the biggest drug busts in the Round Lake area, adding that he thinks this is just the beginning. “I could see this being an operation in multiple states, tracking all the way back to Mexico.”

He said his department learned a valuable lesson: “Tenancy pays off.”

(Source: Sun-Times Media Wire © Chicago Sun-Times 2017. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)