Bolivian opposition leaders have staged protests against President Evo Morales in three of the country's provinces.
Friday's protests were centered in the wealthy eastern region of Santa Cruz. The demonstrators say Mr. Morales has unfairly excluded them from taking part in a planned re-write of Bolivia's constitution.
The president's Movement Toward Socialism Party controls the assembly formed to re-write the constitution. The party wants to make amendments based on a simple majority of votes. Opposition parties say a two-thirds majority should be required for such changes.
Mr. Morales has vowed to give greater political and economic power to the poor and indigenous peoples in Bolivia.
His recent moves to redistribute land ownership and nationalize the country's oil and natural gas sectors have been unpopular among conservatives.
Some information for this report was provided by AP and Reuters.