At least 35 inmates from a Venezuelan jail have died from a mass drug overdose, and 20 are in comas. Meanwhile, Venezuela's government is investigating the incident.

Over 100 inmates stormed into an infirmary at the David Viloria prison following a hunger strike started by many started last Monday, Fox News Latino reports. The group that broke into the infirmary drank a mix of pure alcohol with drugs used to treat diabetes, epilepsy and high blood pressure, according to reports.

About 100 of the prisoners are still being treated for intoxication, while 20 of them remain in comas.

Human Rights activists are questioning what really happened to the inmates after receiving days of conflicting reports. Prisoner rights activists believe that no inmate would voluntarily end his or her life through protests solely because Venezuela's jails are deplorable.

The United Nations human rights agency and Roman Catholic Church leaders in Venezuela called for a thorough investigation on the matter.

Family members wonder if the inmates were poisoned to restore order after a breakthrough of hunger strikes for better treatment.

According to Daily Mail, after visiting the jail, William Ojeda of the ruling socialist party said that many of the intoxicated inmates were drug users with withdrawal symptoms due to the prison's strict regime of abstinence.

Venezuela President Nicolas Maduro has yet to comment on what officials called a mass suicide.

Police arrested Julio Cesar Perez, the jail's warden, on Thursday, who is suspected to be connected with the deaths.

Hundreds of inmates were transferred to other facilities as the government called in the National Guard to get everything under control.

The overcrowded prison is the country's fifth most-crowded jail among 32 correction facilities. According to the London-based International Centre for Prison Studies, the David Viloria prison houses about three times over its capacity. Because of frequent crimes and tougher sentences, the jail population has doubled in the past six years.

Last year, the prison had the second-deadliest riot in Venezuela's history.

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