Violent clashes have broken out in Bolivia amid ongoing confusion about the result of Sunday's presidential election.

At first, it looked like it would go to a second round between President Evo Morales and his rival Carlos Mesa.

But then it appeared that Mr Morales would win outright - sparking suspicion and protests.

Demonstrators set fire to ballot boxes and electoral offices in some cities.

Read more: Clashes as Bolivia’s Morales nears election win