COUNCIL BLUFFS (AP) — An undercover operation has netted more than a dozen arrests for prostitution in Council Bluffs and Omaha, Neb., and officials say the investigation isn’t over. Authorities say those arrested include both prostitutes and their customers. They were taken to the Pottawattamie County jail in Council Bluffs. Police in both cities are assisting the FBI in the investigation. Last week, federal authorities indicted four people who prosecutors say used spas as fronts for a prostitution operation in Omaha.