PANIC spread after one of the world's most deadly volcanoes spewed toxic ash over a city and a separate eruption grounded flights 10,000 miles away.
Residents of Mexico City woke this morning to find ash coating and buildings after the Popocatepetl volcano belched out another toxic cloud.
The volcano is considered one of the world's most dangerous due to its proximity to the city with more than nine million inhabitants.
Around 25 million people live within 62 miles of the crater of the 5,426-metre magma mount, who could also be affected.
There are fears the peak is building towards a major disastrous eruption after activity increased over the past few years, although, it has been periodically erupting since 1994.