At least two people have been killed with 14 missing after an explosion at a military barracks in Bolivia, officials said.

Dozens have also been injured in the blast.

Local authorities said it occurred at around 2.30pm local time in an area used to store pyrotechnics at the barracks in the municipality of Viacha.

The cause of the blast has not been established, but officials said it originated from the defence ministry's fireworks stockpile.

Fourteen of the wounded were transferred to hospitals in the city of La Paz, including a girl with third-degree burns, she told local TV.

Police said dozens of homes were damaged, largely by windows shattered in the blast.

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Ambulances, medical teams and police were deployed to the military complex to assess the damage and evacuate the wounded.

Ms Nebraska said firefighters warned a heat source remained at the site, raising the risk of another explosion.

She urged residents to stay at least 150m away.