The boy was allegedly killed by girl's father and her uncles with the help of village Sarpanch at Shemsherpur Khurd village, police said today.
According to the complaint of the boy's father Malkiat Singh, his son, a labourer in the grain market, had been having a love affair with the 15-year-old girl of Shemsherpur Kurd village for the last two years.
On June 3, the girl had called him to her home, but he was seen by the girl's father who later with the help of relatives hanged the boy to death, police said.
On the complaint of Malkiat Singh, police registered a case under various sections of the IPC against the father of the girl, Pawan Kumar, his brothers Satpal and Jaspal, Sarpanch of the village Amarjeet Singh, Panchayat members Ranjeet Kaur, Ram Singh and Kuldeep Singh, police said, adding that a hunt is on for the accused who are absconding.