The teacher booked for allegedly sexually assaulting a four-year-old in the toilet of a Kandivli school on Monday was finally arrested by the police on Friday. This is the apparently the third such incident in the school in the last three years.

Police sources said the child, a student of junior KG, had complained of pain in her private parts after returning from school. She later confided in her mother that there was blood in her urine and that her class teacher had inserted a finger in her private part when she had gone to the bathroom.