Thirty-five prisoners in north-west Venezuela have died after overdosing on the contents of a jail infirmary they stormed.
More than 100 others were being treated, 20 of whom were very ill, said lawmaker William Ojeda from the governing Socialist Party.
After breaking into the facility, the prisoners are reported to have consumed a variety of medicines. They had been protesting about conditions in the jail.
Ojeda said the inmates at Uribana prison near the north-western city of Barquisimeto had ingested a combination of anti-seizure drugs, insulin, antibiotics and hypertension treatments.
Riot police guards the jail in Lara state.
Relatives of inmates camped outside the prison, in Lara state, once the incident was announced. They have accused prison wardens of poisoning the inmates.
The chief prosecutor’s office said it wanted to question the prison director over the deaths, first reported on Thursday, when the authorities said that 13 inmates had died.
Venezuela has one of the highest crime and homicide rates in Latin America, and the judicial system is struggling to cope with the caseload.
The prison population has been increasing with many of those incarcerated waiting for trial.
Most prisons in Venezuela are run by armed inmates, with the security forces having little or no control, says pressure group Venezuelan Prison Observatory.
(Source: BBC World)