Saudi activist Manal al-Sharif is holding a stand in front of the Saudi embassy in Washington on Friday to protest against the situation of female Saudi women currently detained in Riyadh prisons.

In the United States, Manal Al-Sharif started an awareness campaign for Americans on the human rights situation in Saudi Arabia.

A spokeswoman for the embassy in Washington assured her that Saudi Ambassador Rima Bint Bandar was ready to meet her on the day of her arrival.

Manal al-Sharif said she was ready to meet with the ambassador, but outside the embassy building, referring to the assassination of writer Jamal Khashoggi in the consulate in Istanbul.

It stressed its demands for the immediate release of its imprisoned citizens, the release of the remaining prisoners of conscience and the lifting of the travel ban on their families.

In a written letter to Rima Bint Bandar, 18 senators asked last week to make efforts as a new ambassador to her country to improve the status of women's rights in the kingdom and to stop harsh dealings with imprisoned activists.

In their letter, the senators said improving relations with Riyadh required the kingdom to stop the system of male guardianship and stop targeting human rights activists.

Activists - including prominent activist Jane Al-Hathul - are being tried by the Riyadh Criminal Court after they were arrested in May last year as part of a massive security crackdown on militants a month before lifting the ban on women driving cars in the kingdom.

The Saudi attorney general said in May that some women had been arrested on suspicion of damaging the country's interests and supporting hostile elements abroad.

Most of the 11 female activists in the country were demanding an end to the ban on women driving and the rule of men over women in the kingdom.

Activists are accused of "coordinated activity to undermine security, stability and social peace of the kingdom," the prosecutor said earlier this month. The former official media described them as "traitors, embassy agents".

Dozens of other activists, thinkers, intellectuals, scholars, advocates and journalists have been arrested in separate incidents over the last two years, apparently in an attempt to eliminate any opposition to the crown prince.