A riot involving rival gangs inside a prison has claimed the lives of 16 inmates and injured 35, according to a Venezuelan official.
Chief prisons official Consuelo Cerrada said authorities retook control of the prison after the violence.
Ms Cerrada told the TV channel Globovision on Thursday that fighting erupted the previous day between inmates feuding over control.
She said six of the injured remain in hospital and the rest are back in Tocoron prison in north-central Aragua state.
Officials have said three other inmates were killed and four guards injured in violence at the same prison on Monday.
Violence is common in Venezuela's crowded prisons, where rival gangs often fight for control of cellblocks or the sale of drugs.