Prominent Saudi women's rights activist Loujain al-Hathloul has rejected a proposal to secure her release from prison in exchange for a video statement denying reports she was tortured in custody, her family said on Tuesday.

Hathloul, along with at least a dozen other women's rights activists, were arrested over a year ago as Saudi Arabia ended a ban on women driving cars, which many of the detainees had long campaigned for. Local media tarred them as traitors.

Some of the women appeared in court earlier this year to face charges related to human rights work and contacts with foreign journalists and diplomats, but the trial has not convened in months.