Tunisian unions and civil society groups called for protests later today against a planned visit by Saudi Crown Prince Mohammed bin Salman, reports AFP news agency.

They are protesting over the killing of Jamal Khashoggi.

On 2 October the well-known journalist and critic of the Saudi government was murdered in Saudi Arabia's consulate in Istanbul.

Tunisia's presidency said the prince will visit for several hours on Tuesday as part of a regional tour which includes UAE and Bahrain.

A large banner at the journalists' union was displayed over the weekend saying "No to the desecration of Tunisia, country of the revolution".

In an open letter to Tunisia's presidency, the journalists' union said the prince's visit would be "a flagrant violation of the principles of our revolution".

Tunisia's 2011 uprising deposed longtime dictator Zine El Abidine Ben Ali and triggered the Arab Spring.