Nobel Peace Prize laureate Narges Mohammadi is on hunger strike whilst being held in detention by Iranian authorities, according to a statement from her foundation.

Axar.az informs in the statement shared exclusively with CNN, the Paris-based foundation, which is run by her family, says it received credible information that Mohammadi began her strike on Monday “to protest her unlawful detention and the dire conditions in which she is being held, realities faced by numerous political prisoners currently held in Iran.”

Ali Rahmani, Mohammadi’s son, said in a statement that he was “deeply worried” about his mother and everyone else detained by the regime.

“What is happening in our country is a crime against humanity,” Rahmani said, adding that before her arrest, his mother was “calling for solidarity, unity, and peace.”