A New Milford man has been charged with a number of firearms offenses in connection with a homicide in Danbury last year.  Nikos Chelioudakis was arrested March 5th.  The indictment alleges that the 34-year old sold a .22-caliber handgun with an obliterated serial number to David Ramos last August.  At the time of the sale, Chelioudakis was an unlawful user of a controlled substance and had reasonable cause to believe that Ramos was also an unlawful user of a controlled substance--a violation of federal law.  Danbury Police conducted a joint investigation with the Bureau of Alcohol, Tobacco, Firearms and Explosives.  Chelioudakis was charged with one count of possession of a firearm with an obliterated serial number, unlawful possession of a firearm by a prohibited person, and unlawful sale or transfer of a firearm to a prohibited person.