A Florida K-9 helped bust two undocumented migrants from Mexico who were smuggling nearly $700,000 of heroin in their vehicle, authorities said Tuesday.

K-9 Titan and troopers with the Florida Highway Patrol (FHP) pulled over a Jeep Grand Cherokee on I-75 in Hernando County for having a fraudulent Arizona license plate, the agency said.

MICHIGAN POLICE STOP 2 ILLEGAL IMMIGRANTS TRANSPORTING 20k FENTANYL PILLS IN CAR

After K-9 Titan alerted troopers to something inside the vehicle, they discovered 5.5 pounds of heroin valued over $693,000, according to FHP. Troopers also learned the driver of the vehicle was unlicensed.

K-9 Titan Florida Highway Patrol

Florida Highway Patrol K-9 Titan alerted troopers to 5.5 pounds of heroin, worth nearly $700,000, inside the vehicle. (Florida Highway Patrol)

The vehicle occupants were identified as Maurilio Garcia-Torres, 33, and Ivania Riestra-Garcia, 19, FOX13 Tampa reported, citing the FHP.

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Troopers said both Garcia-Torres and Riestra-Garcia were from Mexico and in the country illegally. 

Florida Heroin drug bust

Troopers said both Garcia-Torres and Riestra-Garcia were from Mexico and undocumented. (Hernando County Detention Center)

Garcia-Torres and Riestra-Garcia were both arrested for heroin trafficking and distribution and taken to the Hernando County Jail, authorities said.