A criminal was killed in a gunfight between his gang and security force members in Rangamati early yesterday, according to an Inter Services Public Relations (ISPR) press release.   The deceased was identified as Arpon Chakma alias Babudhan Chakma. He was a FIR-named accused in the murder case of Naniarchar upazila chairman Shaktiman Chakma, the release read. Arpan was a