During an unrelated investigation, Danbury Police Investigators learned that a City man changed his address and failed to notify the police.  23-year old Jeffry Bispo was placed on the state weapon registry stemming from a previous felony conviction involving the use of a deadly weapon. One of the conditions related to the sentence requires him to notify the police when he changes address.  On Friday, investigators located Bispo in Danbury, and he was arrested without incident.  He was subsequently processed and held on a 250-thousand dollar bond.