(Boston, MA)--Another Providence man is being sentenced this week for fentanyl trafficking.The U.S. Justice Department in Boston says Dario Bier Romero was sentenced on Wednesday to about six years in prison after pleading guilty to charges.Investigators seized about three kilos of fentanyl from Romero and a co-defendant last summer, and then seized another kilo during a search of Romero's residence in Providence.