NEW : Mike McLelland asked about guns for his staff before his death . As friends and family attended a private funeral for a Texas prosecutor and his wife who were gunned down in their Kaufman County home , investigators on Friday announced the arrest of a man accused of threatening the safety of a deputy district attorney . The FBI is investigating the shooting of a U.S. Border Patrol agent in Arizona and whether it was linked to an earlier incident involving two other agents who were killed last year. Miller is being held on $ 1,000,000 bail . Authorities say there is no connection between Miller and the killings .
NEW : Mike McLelland asked about guns for his staff before his death . The FBI is investigating the shooting of a U.S. Border Patrol agent in Arizona and whether it was linked to an earlier incident involving two other agents who were killed last year. Miller is being held on $ 1,000,000 bail . Authorities say there is no connection between Miller and the killings .