Authorities in El Salvador on Monday warned residents near the Chaparrastique volcano in the country's east to be alert after it began to erupt.
The Environmental Ministry's observatory reported explosions in the central crater of the volcano located about 83 miles (135 kilometres) east of the capital. It said the eruption's intensity was a 1 on a scale from 0 to 8.
The eruption began on Sunday when the volcano launched rock and ash into areas surrounding the crater. There were no reported injuries.
Civil Defence Director Luis Alonso Amaya said three municipalities were on alert.
Authorities were preparing 26 shelters that could accommodate more than 10,000 people and installing a command post to provide the most current information on the volcano's activity.
The safety zone was extended to a radius of 3.7 miles (6 kilometres) from the crater.
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