Sources said that A. Pragalatha, 38, Village Assistant, had gone to Mettu Maruthur Colony near Kulithalai on hearing about illegal sand mining and questioned those indulged in it. During the course of inquiry, she was allegedly manhandled by them. Based on her complaint, six persons, including Ranjith, 21, T. Rahul, 20 and P. Premkumar 9 were arrested.