A South Florida federal grand jury indicted a former federal agent and three other Miami-Dade residents for their alleged roles in an operation that involved illegal Oxycodone distribution, federal witness tampering, and obstruction of justice. The indictment charges Alberico Ahias Crespo, 46, a former Special Agent with the Department of Health and Human Services, Office of Inspector General (HHS-OIG), with conspiring to traffic oxycodone, tamper with witnesses, and obstruct justice and with substantive counts of witness tampering. During the time of the alleged crimes, Crespo worked as part of the South Florida Health Care Fraud Strike Force, made up of interagency teams of federal investigators and prosecutors focused on combating healthcare fraud and healthcare-related narcotics trafficking in Southern Florida. According to the criminal complaint affidavit, Crespo used his position as an HHS-OIG Special Agent working on healthcare fraud cases to protect the Oxycodone operation by monitoring Strike Force investigations involving the operation, accessing and disclosing sensitive law enforcement information to Diaz Gutierrez, a patient recruiter, updating Diaz Gutierrez on the progress of healthcare fraud investigations, and coaching Diaz Gutierrez on how to lie to investigators and tamper with evidence. Also charged in the indictment are Jorge Diaz Gutierrez, 66, Yandre Trujillo Hernandez, 41 and Anais Lorenzo, 32. Diaz Gutierrez, identified in the indictment as a patient recruiter, is charged with drug trafficking, witness tampering, and obstruction of justice crimes. Hernandez Trujillo and Lorenzo face drug trafficking charges.