Three D.C. police officers were arrested Tuesday in an internal affairs sting, just one day after police announced the arrest of a fellow officer in an unrelated undercover operation. Officers Guillermo Ortiz, Silvestre Bonilla and Dioni Fernandez were arrested after each of them purchased hundreds of dollars’ worth of electronic equipment they thought was stolen property. All worked in the 4th District in the northern part of the city.

D.C. Police Chief Cathy Lanier said the arrests were part of a 18-month campaign to “weed out” dishonest and corrupt cops. The three officers did not appear to be working together.