A former preschool teacher has been charged with assault in connection with an incident at a school in Ansonia that left a 3-year-old student injured and in need of surgery.

Mary Durso-Smith, 32, of New Haven was arrested Wednesday in connection with a warrant charging her with second-degree assault and risk of injury to a minor, according to Lt. Patrick Lynch of the Ansonia Police Department .

Lynch said the charges stem from an incident on March 25 at Mead Elementary School where a 3-year-old was injured while attending school. The school is pre-K-5.

At the time of the incident, Durso-Smith was a preschool teacher at Mead Elementary.

Lynch said the student’s injury required surgical intervention. The incident was caught on video, which investigators were able to obtain and have dec

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