Two illegal immigrants are facing deportation after authorities took down a heroin smuggling operation in Pennsylvania Thursday, seizing nearly $75,000 of the substance.

Authorities in the state received intelligence of a major drug shipment coming into Westmoreland County, Penn., Thursday on Interstate 76, and police patrolling the highway were put on high alert for suspected traffickers. Officers eventually pulled over a Toyota after the driver failed to turn on their headlights while going through a construction zone, reports PIX 11 News.

A K-9 unit was dispatched, which tipped officers off to a box of drugs in the trunk. Investigators found 7,500 stamp bags of heroin estimated to be worth $75,000.

“We believe these two individuals have been moving heroin into southwest Pennsylvania here for a while and (they’re) starting to grow some roots,” Pennsylvania State Police Trooper Steve Limani said Thursday, according to PI 11 News.