A former pharmacist who diluted drugs for thousands of cancer patients is getting out of prison early. Robert Courtney will be transferred to a halfway house in Springfield, Missouri, in June.In 2002, Courtney was sentenced to 30 years in prison after pleading guilty. He admitted to diluting the prescription medications of 4,200 patients from 400 doctors. Some people received 1% of the dose they were prescribed.The move is frustrating for families who say they lost loved ones at the hands of Robert Courtney.Emilio Rivera was 68 years old when doctors diagnosed him with prostate cancer. He began chemo treatments but told his family something was wrong.His daughter, Emilia Rivera, said he never got sick from the chemotherapy."He had kept a diary like of all of the medications that he took and all of the appointments that he had. And he always said, you know, something's not right," Emilia Rivera said. "He goes, if I pass, you go after these guys."Emilio Rivera died two years after his diagnosis in 2000.It’s a similar story for the father of Kathleen Duncan. Harry Duncan was 74 years old when he was diagnosed with stage two cancer. Doctors told him he had great odds of survival, but less than three months later he died."I can't say he ruined our lives because we still have a life, but he took a whole lot out of our life," Kathleen Duncan said.Both daughters said Courtney is getting something their fathers were never given — the chance to go home."He's getting off to a halfway house you know, and then go home to his family and you know, live out the rest of his life like nothing. And all these people have just memories," Kathleen Duncan said. "You're not supposed to hate somebody. But if I had to hate anybody, it's him.""I can't even fathom why they would let him out early," Emilia Rivera said. "He knew what he was doing. He purposely did it. And he took no consideration to anybody's life. I mean, that's a level of evil that it's hard for anybody to comprehend."KMBC 9 spoke with attorney Mike Ketchmark. He represents hundreds of families who were affected by Courtney.Ketchmark said his office plans to call on the Jackson County Prosecutor to file murder charges on behalf of the families he represents.He said Courtney was charged federally with tampering, but never under Missouri state law. Ketchmark added there is no statute of limitations on murder in the state.Courtney is set to transfer to the halfway house in Springfield on June 20, 2024. He is scheduled for release on May 2, 2026.In 2020, Courtney was to be moved to a halfway house, but local lawmakers called for him to remain in prison. The Justice Department then reversed its decision.