At least 20 people sustained injuries in a clash between two factions of the ruling Awami League (AL) over establishing supremacy in Polashbari union of Mohammadpur upazila Tuesday. The identities of the injured could not be known. Locals said that former chairman of Palashbari union Rabiul Islam and union AL president Golzar Rahman had long been at loggerheads over establishing dominance in the area. As a sequel to the enmity, supporters of Rabiul and Golzar locked into an altercation on Tuesday morning. Read: Teen hacked to death after clash over football game in Magura "The altercation turned violent when both the groups attacked each other with lethal weapons, leaving 20 people injured, said Ikram Hossain, officer-in-charge of Mohammadpur Police Station. The injured have been admitted to Faridpur Upazila Health Complex and Lohagra Hospital in Narail, the OC said. Police claimed that several houses were vandalised during the clash. On information, police rushed to the spot and brought the situation under control, said the OC adding that a case was filed against the accused in connection with the violence.