Huge fire engulfs Saint-Donatien in Nantes, France

A massive fire destroyed part of the Basilica of Saint Donatien and Saint Rogatien in Nantes, France, this morning, according to the BBC.

The fire may have been started accidentally started by two roof workers, ITV reports. No injuries are reported. The fire started after the cathedral's morning mass, and everyone was evacuated.

This video shows the roof has been entirely destroyed:

Images on the Demotix news photo web site show the structure of the roof has collapsed.

People tweeted photos of the blaze:

Some live video:

About 40 firefighters battled the conflagration.

 The fire could be seen across all of Nantes.

 By about midday the fire was under control but much of the cathedral was a blackened shell.

The basilica dates back to the 1800s. Here is what it looked like in happier times:

Wikimedia, CC