In this file photo, Sudanese protestors burn tyres during an anti-government demonstration on January 18, 2019 in the capital Khartoum AFP/File
Khartoum (AFP) Sudanese police fired tear gas on Sunday at protesters ahead of a planned march on parliament in Omdurman, the twin city of Khartoum, witnesses said.
Demonstrators chanting "freedom, peace and justice" began gathering in some areas of Omdurman but were quickly confronted by riot police with tear gas, the witnesses said.
Deadly protests which erupted on December 19 after a government decision to raise the price of bread have turned into nationwide rallies against President Omar al-Bashir's three decade rule.
Officials say at least 26 people, including two security personnel, have died during a month of protests, while rights group Amnesty International last week put the death toll at more than 40.
The Sudanese Professionals Association, an umbrella group of trade unions that is leading the ongoing protest movement, called for fresh demonstrations on Sunday and several days over the coming week.
"We are calling for a march to parliament in Omdurman on Sunday," it said in a statement.
"The protesters will submit to parliament a memorandum calling on President Bashir to step down," added the association, which represents the unions of doctors, teachers and engineers.
Over the past month, protesters have staged several demonstrations in Omdurman.
The SPA said there will also be rallies in Khartoum on Sunday, to be followed by night-time demonstrations on Tuesday in the capital and in Omdurman.
"And on Thursday there will be rallies across all towns and cities of Sudan," the statement added.