The government said the protest was unauthorized and warned that police 'will deal firmly and decisively' with anyone attempting to take part.
Early Tuesday, the streets of downtown of Cairo were cordoned-off. Organizers have said protests are planned in at least 16 cities to press demands for jobs, the abolition of emergency laws and fresh elections.
Amnesty International urged Egyptian authorities not to crack down on demonstrators.
'Egypt needs to allow peaceful protests, and stop arresting and intimidating peaceful opposition activists,' said Hassiba Hadj Sahraoui, Amnesty's Deputy Director for the Middle East and North Africa.
'The country's security forces have a worrying record when dealing with demonstrators, and we urge them to refrain from excessive and disproportionate force,' Sahraoui said in a statement.
Egypt's Emergency Law, in place for almost three decades, bans protests without government permits and allows the government to make arrests without charge.
Despite the warning, activists continue to organise online through social networking websites such as Facebook and Twitter, which have been influential in spreading information about the protest.
As of Tuesday morning, nearly 90,000 people confirmed they support the protest, according to the Arabic-language Facebook group called Revolution Day against Torture, Poverty, Corruption and Unemployment.
The protest, planned to coincide with Egypt's Police Day, is hoping to emulate the Tunisian uprising that led the ouster of Zine el-Abidine Ben Ali after nearly 23 years in power.
'We are not less than Tunisia. Tens of thousands went out on the streets demanding their rights until the removal of the president and his escape from the country. We want our rights,' said organisers in an Arabic statement on the Facebook group.
