Women’s and human rights activist, arrested at a demonstration in December, is said to be on hunger strike

Iran has sentenced the Nobel peace prize laureate Narges Mohammadi to more than seven more years in prison after she began a hunger strike, her supporters said Sunday, as Tehran cracks down on all dissent following nationwide protests and the deaths of thousands at the hands of security forces.

The new convictions against Mohammadi come as Iran tries to negotiate with the US over its nuclear programme to avert a military strike threatened by Donald Trump. Iran’s top diplomat said on Sunday that Tehran’s strength came from its ability to “say no to the great powers”, striking a maximalist position just after negotiations in Oman with the US.

Mohammadi’s supporters cited her lawyer, Mostafa Nili, who had spoken to her. Nili confirmed the sentence on X, saying it had been handed down on Saturday by a court in the city of Mashhad.

“She has been sentenced to six years in prison for ‘gathering and collusion’ and one and a half years for propaganda and two-year travel ban,” he wrote. Mohammadi had received another two years of internal exile to the city of Khosf, about 740km (460 miles) south-east of the capital, Tehran, the lawyer added.