Authorities say the arrests of four Forsyth County teenagers on marijuana charges earlier this week have likely dealt a blow to the local suburban drug scene.

According to the Forsyth County Sheriff’s Office, the incident stems from an ongoing undercover investigation that is expected to result in more arrests.

Karleen Chalker, a spokeswoman for the sheriff’s office, said investigators made undercover drug purchases from all four teens over the course of about two months.

“It’s believed that these individuals were involved with selling primarily to high-school-age kids,” she said of those arrested Tuesday night.

In a statement, Sheriff Ted Paxton said the lengthy investigation began with a tip from a resident in a local community.

“These arrests will make a large impact on the drug sales and distribution in the west and south Forsyth area to our teens and young adults,” he said.

The suspects — Austin Z. Mauldin and Tyler C. Fasy, both 17, and two 16-year-olds — have each been charged with the sale of marijuana.

Mauldin, of Holly Court, and the juveniles also face a second charge, the use of a telecommunication device to commit a felony.

As of Thursday, Mauldin and Fasy, of Aldridge Drive, had been released after posting bonds at the Forsyth County Detention Center, authorities said.

Bond for Mauldin, who turned himself in, was set at $16,500, according to a jail spokeswoman. The bond amount for Fasy, who was arrested at his home, was $13,200.

Also arrested Tuesday night were the two 16-year-olds, one male and the other female, at the girl’s home in The Legends subdivision. Their cases have been referred to Juvenile Court.

The two juveniles attend Forsyth County schools, Chalker said, while the 17-year-olds are believed to have graduated recently from the district.

No undercover buys occurred on any of the school grounds, according to the sheriff’s office.