A prominent Saudi female activist, who campaigned for women's right to drive, has been sentenced to more than five years in prison.

Loujain al-Hathloul, 31, has already been in a maximum security prison for two and a half years.

She and other activists were detained in 2018 on charges including contacts with organisations hostile to Saudi Arabia.

International human rights groups have repeatedly called for her release. But on Monday, the country's Specialised Criminal Court, which was set up to try terrorism cases, convicted her of various charges including trying to harm national security and advance a foreign agenda.

It sentenced her to five years and eight months in prison. Two years and ten months of the sentence are said to have been suspended.

She and her family have denied all charges. They have also said that she has been tortured in jail - accusations the court dismissed.

Hathloul's family says she was held incommunicado for three months following her arrest, and that she was subjected to electric shocks, whippings, and sexual harassment.

They also allege that she was offered freedom if she agreed to say she was not tortured. Human rights experts have said her trial did not meet international standards.

In November, Amnesty International condemned her transfer to the Specialised Criminal Court, saying it exposed "the brutality and hypocrisy" of Saudi authorities.

The case is seen as further damaging the reputation of Saudi Arabia's controversial de facto leader Crown Prince Mohammed Bin Salman, known as MBS.

He has led a programme of reforms, including lifting the ban on women driving, in a bid to open up the conservative kingdom to investment.

But he has also been condemned for the continued crackdown on rights activists, as well as the Saudi authorities' role in the murder of journalist Jamal Khashoggi.