US woman Sarah Shourd, who had been freed by Iran after being detained with two fellow US hikers in the year of 2009, had stated that she woul not return there to stand for trial.
Shourd had to stand for trial next week for spying alongside her friends, who are currently still being detained in Iran.
She informed the AP news agency that she had suffered from post-traumatic stress disorder and that to return it will be "far too traumatic".
She and the other hikers had stated that they unknowingly crossed into the country while they had been hiking in the month of July in 2009.
Shourd had been released on bail in the month of September of 2010 and had returned back to the US. Her fiance Shaneand their friend Josh Fattal still remain in prison in the city of Tehran.
"There is a part of me that would like to go back and stand by Shane and Josh at this most difficult time," she reported to another news agency.
"But really I'm afraid it would be too traumatic for me to go back after what I've been through in Iran," she had added.
Shourd had stated that the trio had been hiking in Iraqi Kurdistan and did not intentionally cross over the border with Iran.