The accused has been taken into custody, police said. The body of the victim was found on Saturday.
The accused and the victim, both resident of Daspara under Liluah police station, had bet Rs 250 on the result of a cricket match.
The victim - also a 12-year-old - won the bet, but the accused refused to pay the amount, triggering a quarrel.
"They had bet Rs 250 on the match. My son won the bet and demanded the money. But he (the accused) refused to pay the amount.
"He then brought my son to a nearby garden and beat him up mercilessly. He then smashed my son's head with a brick. My son became senseless. Then he throttled him," said the victim's father Kanhaiya Paswan.
The accused then tried to disfigure the victim's body, dragged it to a nearby jungle and covered it with shrubs and bricks.
The accused and one of his friends were detained and interrogated at length in the Liluah police station. "One of the boys broke down and confessed the crime," said a police officer.
"I won't get my son back. But the killer must be punished," said Paswan.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
About VDC
Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.