FALL RIVER, Mass. — Police are investigating threatening text messages sent to three members of a Massachusetts city council.The Herald News reports that Fall River Councilors Pam Laliberte-Lebeau, Cliff Ponte and Richard Cabeceiras received the messages around 8 p.m. Tuesday. All three members serve on the council's public safety committee.Laliberte-Lebeau says the sender claimed her ex-boyfriend and brother would beat the councilors to death.