Two people have been killed during clashes between security forces and protesters in the town of Sohar, northern Oman.
Hundreds of protesters gathered in the industrial town to call for political reforms. At least 10 people were wounded when police fired tear gas and rubber bullets at the demonstrators, according to reports from Reuters news agency.
Demonstrations have also taken place in the southern town of Salalah.
On Saturday, the ruler, Sultan Qaboos bin Said, changed six members in his cabinet and announced that social benefits for students would be increased.
Sultan Qaboos has ruled the country since he seized power from his father in 1970.