(CNN) Embattled Venezuelan president Nicolas Maduro has written a letter to the United Nations High Commissioner for Human Rights, Michelle Bachelet, to reject the content of a report in which Bachelet highlighted "patterns of violations of all human rights" at the hands of the Venezuelan state.

The letter is dated July 11, and states that Bachelet "presented a report plagued by false statements, misrepresentations and mishandling of data and sources".

Maduro had previously accused Bachelet of bias following the publication of the report on July 4, but this is the first time the president has reacted at such length and detail.

The letter is five pages long. It accuses Bachelet of conducting the vast majority of fact-finding interviews outside of Venezuela, and emphasizes the role of US economic sanctions in its humanitarian crisis.

The letter also "demands a full rectification and correction of the grave errors" on behalf of Bachelet's office.

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