The United States has lashed out at the Maduro regime over the passing of a imprisoned political dissident, describing it as a "reminder of the vile nature" of President Nicolás Maduro's government.
Alfredo Díaz was found dead in his cell at the El Helicoide detention center in Caracas, where he had been held for in excess of twelve months, as stated by rights groups and dissident factions.
The Venezuelan government reported that the man in his fifties displayed indicators of a cardiac arrest and was rushed to a medical facility, where he succumbed on Saturday.
This latest intervention from the United States is part of an growing exchange of rhetoric between the American government and President Maduro, who has alleged Washington of seeking a change in government.
In recent months, the United States has expanded its troop levels in the region and has executed a number of lethal strikes on vessels it claims have been used for trafficking drugs.
US President Donald Trump has accused Maduro himself of being the leader of one of the region's narco-trafficking organizations—an allegation the Venezuelan president vehemently denies—and has hinted at armed intervention "via a land invasion".
"Alfredo Díaz had been 'held without cause' in a 'facility for mistreatment'," declared the American diplomatic office for the region.
The opposition figure was arrested in that year after being among many dissidents to dispute the conclusion of that period's national vote.
Venezuela's state-run election council proclaimed Maduro the winner, despite figures from dissidents showing their nominee had triumphed by a overwhelming majority.
The electoral process were largely criticized on the world stage as flawed and unfair, and sparked protests across the country.
Díaz, who led the Nueva Esparta state, was charged of "stoking division" and "terrorist acts" for disputing Maduro's electoral win.
Local advocacy group Foro Penal has voiced worry over declining conditions for jailed opponents in the South American state.
"One more detained dissident has died in Venezuelan jails. He had been held for a twelve months, in solitary confinement," wrote Alfredo Romero, the group's director, on a social media platform.
He added that the detainee had only been permitted one encounter from his daughter during the entire length of his detention. He also mentioned that seventeen detained dissidents have died in the country since that year.
Dissident factions have also denounced the administration over the death of the former governor.
María Corina Machado, a well-known political rival who won this period's Nobel Peace Prize but who is in hiding to escape detention, stated that his death was part of a pattern.
"Sadly, it contributes to an alarming and difficult sequence of deaths of jailed opponents detained in the aftermath of the electoral crackdown," she wrote.
The coalition of rivals declared that the former governor "died unjustly".
His own political party, Democratic Action (AD), also honored the former governor, noting he had been held without justice without proper legal procedure and had stayed in conditions "that infringed upon his basic rights".
Frictions between the US and Venezuela have become ever more tense over what Trump has labeled attempts to curb the influx of narcotics and immigrants into the United States.
Maduro has in turn accused the US of using its drug enforcement efforts as an justification to depose his administration and gain control of Venezuela's enormous petroleum resources.
The US has also deployed a significant armada—its most substantial deployment in the area in many years—along with many troops.
In a related move, the Venezuelan military reportedly inducted more than 5,600 soldiers in one go on Saturday, in response to what defense officials termed US "intimidation".