The accused, identified as Surender Singh, carried out the frenzied attack when the victim, Karuna, was walking through the area at 9 AM. She was a teacher at Novel Reaches School, police said.
Scooterists and passersby looked on as Singh dragged the girl, who fell down as she tried to save herself, and relentlessly attacked her. Singh stabbed the woman 22 times.
A man tried to approach but backed off and left from there.
Singh had been stalking the girl for a year but she resisted his advances, said a senior police officer.
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The victim used to learn computer at a training centre owned by the accused and he fell in love with her, police said.
The victim's family had lodged a complaint against the stalker six months back but both the families reached a compromise and the accused had stopped stalking her, said the victim's family.
However, he attacked her today and brutally killed her, police said.
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