Sadbhawana Party Chairman Rajendra Mahato, one of the key leaders of the agitating United Democratic Madhesi Front, was injured in a clash with police at Rani customs point, near Biratnagar of Morang district, on Saturday. Morang District Police Office spokesperson DSP Pramod Kumar Kharel told THT Online that Mahato among some other cadres of the Front had gathered at the border point to stage a sit-in protest.