Algiers - Thousands of Algerians defied police cordons on Friday and converged on the capital demanding the departure of the country's newly appointed president Abdelkader Bensalah.
Protesters are calling for the resignation of Bensalah, who the opposition sees as an ally of former president Abdelaziz Bouteflika.
Bensalah was appointed by parliament on Tuesday to lead the north African country in a three-month transitional period after Bouteflika was forced to step down.
Police on Friday blocked all access roads leading to the capital, Algiers, to stop protesters from reaching the city, according to witnesses.
Large numbers of riot police were also deployed in Algiers' major public squares ahead of the protests, witnesses said.