Argentine police fired tear gas to disperse about 1,000 demonstrators hurling rocks and bottles after tens of thousands took to the streets to denounce government anti-crisis measures.
Rubber bullets and water cannons were also used when a small group of protesters tried to approach the gate of the presidential palace, where the noisy protest had converged. Most protesters had left the scene before police intervened.
Demonstrators banged on pots and pans to protest the government's failure to solve the economic crisis.
The South American country is mired in almost four years of recession, is unable to pay its foreign debts and faces rising poverty levels.
Limits have also been placed on the amount of money companies and individuals can withdraw from banks, leading to millions not being paid by their employers.
The government of Argentine President Mr Eduardo Duhalde has put in place a sweeping emergency plan to ease the deep economic crisis, including the flotation of the Argentine peso.
But business leaders have warned that failure to adopt a viable economic plan could lead to further unrest.
Last month, 30 people died when protests turned violent.
AFP