Kaufman , Texas ( CNN ) -- 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 news came after word that police were searching for a person who called in a bomb threat during the visitation Thursday night for Kaufman County District Attorney Mike McLelland and his wife , Cynthia , at a church in Wortham.The call was made about 6:30 p.m. after the bodies were returned to the church from a public memorial service in Sunnyvale . The news of the arrest and the bomb threat come as federal , state and local authorities search for suspects in the unsolved killings of the county 's district attorney and his chief felony prosecutor , who was killed almost two months earlier . The McLellands ' bodies were discovered on March 30 at their home , almost exactly two months after McLelland 's chief felony prosecutor , Mark Hasse , was killed in a daytime shooting outside the county courthouse . Authorities have been working to determine whether the killings of McLelland and Hasse are connected , scouring their case files and interviewing colleagues for help with potential leads . A day before his body was discovered , McLelland voiced concern about the safety of his staff when he stopped by Helz Firearms , a local gun shop . `` He was in there ... asking about what he should get his co-workers as self-protection , '' said O'Neil Kidwill , the gun shop owner . `` I recommended the 38 Smith & Wesson snub nose and perhaps a bulletproof vest . He said he already talked to some of the people about the vest , and he would tell them about the revolvers . '' The 63-year-old county district attorney did n't give any indication that he felt personally threatened , only worried for his employees . `` He was concerned for them . For himself , he was at ease , '' Kidwell said . But sometime after he left the gun shop , something happened . The couple 's bodies were found inside their home in Kaufman County . They had been shot at least a dozen times , a law enforcement official , who had been briefed on the investigation , told CNN this week . The official was not authorized to publicly release details of the investigation . While authorities have not publicly named any suspects or a potential motive in the cases , Kaufman sheriff 's deputies arrested two men this week and accused them of threatening the safety of public officials . On Friday , the sheriff 's office said it charged Robert Alan Miller , 52 , of Terrell , Texas , with one count of making a terroristic threat . Officials said he threatened a deputy district attorney in a posting on a news website . Miller , who was arrested Thursday , is being held at the Kaufman County Jail on $ 1 million bail , according to the sheriff 's office . Earlier , authorities arrested Nick Morale , 56 , on one charge of making a terroristic threat after he allegedly threatened a county official . An arrest affidavit alleges that Morale called the county 's Crime Stoppers tip line on Monday afternoon , saying a county official `` would be the next victim . '' Authorities said there is nothing to link Miller or Morale to the killing of the McLellands or Hasse . They have declined to release the names of those who were threatened . George Howell reported from Kaufman , Texas ; Chelsea J. Carter reported and wrote from Atlanta . CNN 's Carol Cratty and Joe Sutton contributed to this report .
NEW : Robert Alan Miller asked about guns for his staff before his death . Mike McLelland , almost exactly two months , of Texas , Texas , is accused of threatening a prosecutor . Miller is being held on $ $ 1 million bail . Authorities say there is no connection between Miller and the killings .