A major drug trafficking pipeline from Detroit to northwest Pennsylvania has been shut down.
Attorney General Dave Sunday and Pennsylvania State Police announced arrests after vehicle stops this week.
Twin brothers Davon and Davion Johnson, both 25, were arraigned on felony drug trafficking charges, with bail set at $100,000 each.
Their older brother, Keshawn Johnson, 31, is still at large. Another suspect, Kelsey Parks, faces similar charges, with bail set at $50,000.
Authorities had been investigating cocaine trafficking into Erie and Lawrence counties. On Monday, police stopped two vehicles entering New Castle from Michigan, seizing cocaine and making arrests.
Attorney General Sunday said the operation dismantled an interstate drug network.
The investigation is ongoing, and more charges are expected.