JACKSONVILLE (CBSMiami) – Several correctional officers in a county near Jacksonville are being treated for potential drug exposure.

The officers responded after three inmates were found unresponsive at the Columbia Correctional Institution.

READ MORE: Man Sought In NW Miami-Dade Machete Attack

The Florida Department of Corrections says two of the inmates died, while the third is in stable condition.

READ MORE: Pembroke Pines Police Officers Take Oath To 'Serve And Protect' To Next Level With Moving Gesture

There’s no word on exactly how those officers are doing.

MORE NEWS: 2 Diners Injured In Partial Deck Collapse At Fort Lauderdale Waterfront Eatery

The prison has been locked down while they investigate.