February 23, Nasimi District Court extended Arif Yunus pre-trial detention sentence until August 5, 2015.
Yunus lawyer, Afgan Mamedov, said the court's decision to extend the sentence was unfounded.
Yunus is held at the investigative prison of the Ministry of National Security - facility known for torture, ill-treatment and absence of proper medical facilities.
Arif Yunus, political scientist, was arrested August 5, 2014 on charges of treason. A week earlier, his wife, prominent rights activist Leyla Yunus was arrested on the same charges.