Popocatepetl volcano near Mexico City
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High alert for Popocatepetl volcano in Mexico

22 April 2012 Last updated at 02:52 BST

People living on the slopes of the Popocatepetl volcano near Mexico City are watching with concern as the volcano spews ash and burning rocks.

Columns of ash have been shooting from more than 60 openings in the crust of the 5,450m (17,900-foot) volcano.

The authorities have raised the alert level and have planned evacuation routes and shelters in case of a large explosion.

Alpa Patel reports.