In pictures: Bolivian unrest

1 of 7 Four weeks of protests and road blockades have led to food shortages in Bolivia's capital, La Paz.

2 of 7 The embattled president, Carlos Mesa, has offered to step down in a televised address.

3 of 7 Police used teargas to disperse the crowd as demonstrators surrounded the presidential palace on Monday.

4 of 7 Some were arrested, among them miners, for allegedly throwing dynamite sticks.

5 of 7 The demonstrators, many brandishing fake weapons, are calling for the nationalisation of the energy industry.

6 of 7 Indigenous women from the poor slums around the capital have taken actively part in the protests.

7 of 7 Bolivia's near future is uncertain, with indigenous leaders hostile to Mr Mesa's most likely successors.