The accused has been identified as Suryanarayana Reddy, a tailor.
"Suryanarayana, whose house is located near the premises of the elementary school, used to lure the girls by offering them chocolates and fruits and touch them inappropriately," said Amalapuram SP L Ankaiah.
He said three out of four girls (all 7-year-old) are students of class 3 and another girl (9-year-old) is a student of class 5.
The incident came to light yesterday after parents of the girls, who are labourers, lodged a complaint with police against Suryanarayana who is absconding.