The accusation came after the Argentine embassy hosted a meeting with Venezuelan opposition leaders, raising concerns over the deteriorating relations between the two South American countries.

The Argentine president's office stated that the power outage endangered the safety of Argentine diplomatic personnel and Venezuelan citizens under their protection.

The opposition leaders were not named in the statement.

Tensions have risen between the governments of Venezuela and Argentina following criticism from Venezuelan President Nicolás Maduro over the election of Argentina's far-right president, Mauricio Macri, in November 2015.

Maduro labeled Macri's victory as a win for the "neo-Nazi extreme right." Venezuela's opposition accuses Maduro's government of suppressing their leaders and restricting free and fair campaigning ahead of Venezuela's presidential elections on July 28, 2016.

Maduro announced his intention to run for re-election on March 17, 2016, marking his sixth year in power since the death of his mentor, Hugo Chavez, in 2013.

CNN has reached out to both governments for comment.

In the given text, it is mentioned that Venezuelan President Nicolas Maduro may not face significant opposition in upcoming elections as his main rival, María Corina Machado, has been banned from participating due to corruption allegations which she denies.

The text also highlights the economic struggles Venezuela has faced under Maduro's rule, including hyperinflation and an economic collapse worsened by US sanctions on the oil and gas sector.