A Florida Department of Corrections news release says the three inmates were found unresponsive Saturday afternoon at Columbia Correctional Institution Annex in Lake City. The statement doesn't include details such as the type of drug involved in the overdose or who found the inmates.
The release says security and medical staff immediately responded. Two inmates were pronounced dead, and one was in stable condition. Responding staff were evaluated at an outside hospital for potential drug exposure.
The statement says the prison was locked down and visitation was canceled Sunday.
State law enforcement officials were investigating how the drugs got into the prison.
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