At least 10 people were injured as the two rival groups clashed over a trivial matter at Bonogram Bazar in Santhia upazila on Sunday night. The clash erupted following an altercation between Afzal Hossain, a customer and Sajahan Ali, mobile phone trader at village Padmabila in Bonogram. Police and the locals said, the clashing groups used lethal weapons leaving at least 10 people injured from both sides. Of the injured, Afzal, Sajahan, Tazim Uddin and Altaf were treated at different clinics.