In a suicide noted recovered from her room she stated that she was very upset with her boyfriend, with whom she was in a relationship for last three year, police said.
The girl's father had on Sunday invited the boy and his parents to his house for discussing their marriage, during which the boy's parents demanded a car in dowry, police said.
"When the boy's parents reached the girl's house, his mother demanded a car in dowry to which the girl objected. Thereafter, her boyfriend on Monday refused to marry her following which she went into deep depression and last night committed suicide by hanging herself," a police officer said.
Based on a complaint filed by girl's parents, a case has been registered in this regard, police said, adding, they would interrogate the boy and his parents and take strict action against them if found guilty.