Three persons, including a five-year-old girl, were killed in three accidents in the district. The girl, Supriya, was fatally knocked down by a SETC bus at Madhirimangalam near Kuthalam on Tuesday when she along wither mother were on their way to her school. She died on way to hospital. A two-wheeler rider Arunachalam was hit by a passenger auto, along the Puthur-Nagapattinam road at Melaikottavaasal on Monday. In the third incident, a senior citizen died after he fell from his bike at Marudhur South Vedaranyam on Monday. M.R.Tamilarasu was riding his two-wheeler, when the vehicle lost balance around a turn.