Four persons, including three of a family, were killed and five others injured in a clash between two groups in Krushnaprasad area, about 120 km from Puri, the police said.

Three members of a family of Kholaganja were charred to death as some houses in their village were set ablaze in the early hours after a youth of neighbouring Budhibara village died in the clash on Thursday night, additional superintendent of police R K Mishra said.

Trouble had erupted during the marriage of a girl of Budhibara with a boy of Kholaganja on May 12 as the bride's family was forced to do away with certain ceremonial rituals as dictated by the bridegroom's side, the ASP said.