Mark Callahan, 28, was convicted of Second-Degree Murder with a Firearm and Tampering with Physical Evidence. Callahan was in a verbal altercation with the victim at the Monticello Motel in Dundee when he pulled out a firearm and shot the victim; who was later declared deceased. Callahan then fled the scene and tried getting rid of the firearm by throwing it over a nearby privacy fence. Callahan will be sentenced on June 10^th.  State Attorney Brian Haas thanks Assistant State Attorney Josie Colon and the Polk County Sheriff’s Office for their hard work on this case.