No cause of the fire was given pending a probe led by three investigators. The injured were being treated at a hospital in Valencia, the state capital.
A National Penitentiaries Ministry source said that the blaze was located in unit 1J, and apparently caused by a short circuit.
Venezuela's crowded prisons are among Latin America's deadliest. Government plans to improve conditions have not been met, rights groups say.
Many prisoners awaiting trials see years go by before they ever see a judge. The Venezuelan Prisons Monitor, a non governmental group, says that in 2014, 309 inmates many never convicted of anything were killed. Another 179 were injured in prisons that it says are at 170 percent capacity.


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