Rights Watch.

The two groups analysed information about cases involving a total of 32 people. Victims include military officers accused of plotting against the government and civilians accused of collaborating with Oscar Perez, a rogue police officer who was killed in January 2018 after opposing the government.

Several detainees did not have access to their families, lawyers or adequate medical treatment during their detentions, the report said.

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The individuals were arrested for crimes including "treason" and "instigating rebellion", however lawyers representing the accused said the charges were fabricated and not supported by any real evidence.

Human Rights Watch received no response from the Venezuelan government on the abuse allegations, which the rights groups said followed a widespread pattern of torture and abuse of detainees by Venezuelan police officers, intelligence agents and membersof the Bolivarian National Guard.

More than 12,800 people have been arrested since 2014 in connection with anti-government protests, according to Foro Penal, with more than 7,500 since conditionally released.

Pressure mounting on Maduro

The report's release comes a day before President Nicolas Maduro is due to be sworn in for a second six-year term after a controversial win in an election largely boycotted by the opposition last year.

Many countries have dismissed the vote as a sham, with a bloc of a dozen Latin American countries and Canada, known as the Lima Group, saying on Friday that they would not recognise Maduro's new mandate.

The Organization of America States (OAS) is also due to meet in the coming days to discuss Venezuela and Nicaragua.

In a lengthy press conference on Wednesday, Maduro reiterated