Chattogram, Oct 20 (UNB) – Madrasah students on Sunday attacked Hathazari police station after four people were killed and over 200 others injured in a clash between police and locals in Borhanuddin upazila over a ‘Facebook post’ hurting the religious sentiment.   Md Towhidul Islam, officer-in-charge (investigation), said, “Madrasah students threw brickbats at the police station but nobody was injured.”