Ms Mohammadi had recently accused the Iranian authorities of intensifying repression since the June ceasefire with Israel.
Last week she wrote an article for Time magazine, external about the Iranian state controlling all aspects of personal or public life.
“Their peace is disrupted by surveillance, censorship, arbitrary arrest, torture, and the constant threat of violence,” she said.
She had also told the Nobel Committee she had received warnings from “agents of the regime” through indirect channels and her lawyers.
“The threats conveyed to Ms Mohammadi make it clear that her security is at stake, unless she commits to end all public engagement within Iran, as well as any international advocacy or media appearances in support of democracy, human rights, and freedom of expression,” the Nobel committee’s statement added.
Over the past year, she has continued to remain defiant, refusing to wear the mandatory headscarf and meeting fellow activists across the country.
Across her lifetime, Mohammadi has been arrested 13 times and been sentenced to more 36 years imprisonment and 154 lashes, according to her foundation.