Sudan's Prime Minister Abdallah Hamdok has been "kidnapped" in his Khartoum home alongside his wife in the early hours of Monday morning, according to a statement on the Ministry of Culture and Information's Facebook page.

It says what happened represents a huge infringement of the constitution and a "complete coup".

The statement called on Sudanese people to take to the streets in peaceful protest to do all they can to "protect their revolution".