The United States on Friday demanded that Iran [1] free jailed human rights activist Nasrin Sotoudeh, who it said has been on hunger strike for more than six weeks, and sharply criticized Iranian authorities for their treatment of the 49-year-old prize-winning lawyer.

State Department spokeswoman Victoria Nuland said reports of Sotoudeh's rapidly declining health were deeply troubling, and that she had been denied medical care and kept in solitary confinement.

Sotoudeh began a hunger strike on October 17, according to the International Campaign for Human Rights in Iran. She is protesting against a travel ban placed on her daughter and authorities' limits on visits with her family, the group said.