A public corruption sting involving bribes for votes to award multimillion-dollar engineering and construction contracts has netted a Weslaco attorney and a Rio Grande City lawyer, who federal agents arrested Friday.

The defendants in the case are John F. Cuellar, a Weslaco lawyer who formerly served as a Weslaco city commissioner, Rio Grande City attorney Daniel Garcia and a nonlawyer, Arturo C. Cuellar Jr., who was a Hidalgo County commissioner. The Cuellars, who are cousins, each face charges of conspiracy to commit honest services wire fraud and conspiracy to commit money laundering, while Garcia faces the money laundering charge.