DENVER -- A K-9 discovered drugs during a routine traffic stop, eventually leading to the arrest of three other people believed to be part of a drug organization, the Weld County Sheriff's Office said.

Officers said they arrested 25-year-old Guadalupe Pedraza of Evans after finding about 9.2 ounces of methamphetamine in his vehicle on Monday during the traffic stop.

Further investigation led investigators to find 10 ounces of the drug inside a car driven by Julian Garcia on Tuesday. Authorities said a woman, Obdulia Medina, and a child were also in the vehicle.

Both Garcia and Medina were arrested and booked on charges of possession with intent to distribute and child abuse.

Authorities later searched a home and found one pound of meth and $32,000 in cash. They arrested a fourth person, Felipe Leon Reyes-Vargas, on charges of possession with intent to distribute.

The Larimer County Drug Task Force said it believes all four suspects are part of an organization that was a significant source of meth in Weld and Larimer counties.

Authorities said they seized a total of over two pounds of meth with a street value of over $70,000.

Pedraza was charged with possession of a controlled substance. His bond was set at $100,000.