The incident came to light on Thursday, when the girl, who was studying in class 11 of an all girl's government school was attacked with a sword on her neck, where she died on the spot, said the police officials.
The victim's family alleged a man named Dilip Sahu to be her killer.
"In 2014 the girl had filed a complaint of eve-teasing against the Dilip and a criminal investigation was done on the matter," said SDOP Vijay Singh.
Dilip has been arrested in the matter and is being interrogated by the police.
"I saw a girl outside and a man walking behind her outside the school and thought they were family. The man suddenly started beating the girl. I tried to intervene and shouted him to stop, as I was about 20 feet away, he managed ran away," said an eyewitness.
The investigation is underway in the matter. (ANI)