Missing person — Helen Noone was last seen today when she left for a walk in Merrimac. She is 76 years old and 5-foot-3. She was last seen wearing a multi colored jacked and green pants. She often walks on Winter, Church, East Main, West Main, Emery, and around the Donahue School. Anyone who has seen Helen today is asked to call the Merrimac police station at 978-346-8321.