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If you know the name and telephone number of the attorney, your first action should be to call him/her and him/her to follow up with the state correctional facility. Hopefully, the lawyer will help. If not, then here are some things that you can do.
First, the inmate should have been given a copy of his sentencing disposition from federal court. If he has it, he can give it to the proper authorities at his correctional facility. Usually, the paperwork follows with the Defendant after the sentencing, and with the authorities who had him in custody.
Second, if the inmate doesn't have a copy of his paperwork, I have provided a link below to the Missouri Department of Corrections. Find the facility where the inmate is housed, and click on it. It will give you contact information for the warden. You can contact his/her office and explain what happened. It is possible that his/her office can get the information from the federal court.
Third, you can go to the court, (Judge's clerk or secretary) in which the Defendant was sentenced and ask for a copy of his Judgment of Sentence. That Judgment of Sentece will spell out the exact terms of the federal court sentence of "time served."
Usually "time served" means that the judge gave the defendant a sentence of however much time the Defendant has already served on the federal case. So, if the person had been incarcerated for 6 months, the judge would give 6 months jail, credit for 6 months served. Then, the Defendant would have to go to the state court and resolve whatever matter was pending. If the Defendant is convicted, whatever the sentence of the state court judge was, would be the sentence. The federal matter would have been entirely concluded by the "time served". That means, he woudn't have to re-appear in federal court or do federal time.
If the Defendant believes that his lawyer did not effectively represent him, the Defendant can file a grievance against the lawyer with the State Bar of Missouri. I have provided a link to the appropriate page.
I wish you and the Defendant luck.
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