The teenage twins of jailed Iranian activist Narges Mohammadi have accepted the Nobel Peace Prize on her behalf.

Ms Mohammadi - who is serving a 10-year jail term in Tehran - won this year’s prize for her work fighting against the oppression of women in Iran.

In a speech smuggled from prison and read out by her children, she denounced Iran’s “tyrannical” government.

“The Iranian people, with perseverance, will overcome repression and authoritarianism,” she said.

“Have no doubt, this is certain.”

The prestigious peace prize was handed out in Oslo on Sunday, along with the other Nobel prizes for literature, science and economics.

Ms Mohammadi has for years been a prominent human rights figure in Iran. The 51-year-old has been in jail almost continuously since 2010 - and in total has been arrested 13 times, convicted five times, and sentenced to a total of 31 years in prison.

She is currently in jail for “spreading propaganda”.

Her husband, political activist Taghi Rahmani, lives in exile in Paris with their two children and they have not seen one another for years.