Hundreds of Tunisians have gathered in the heart of the capital under heavy security to protest against a law which offers amnesty for those accused of corruption.

The controversial draft law on economic reconciliation is a centerpiece of the new government's program and seeks to boost the economy by clearing cases against businessmen and civil servants accused of corruption.

Opponents to the law, however, see it as an attempt to whitewash the crimes of the old regime.

Police had originally banned Saturday's demonstration, citing threats of terrorist attacks, but the coalition of opposition parties went forward with the march.

Hundreds of police have been mobilized to guard the demonstration route along the city's iconic Bourguiba Avenue.