Explosion rocks Lyon scientific library

A large fire broke has broken out on the rooftop of a university in France's Lyon after several explosions were heard, the Lyon 1 faculty said.

Police and university sources said works had been ongoing on the roof and that a gas bottle exploded, starting the blaze. According to the officials, one person was hurt in the incident, Reuters reported.

Firefighters arrived at the scene to tackle the blaze, and the plumes of black smoke rising from the fire can be seen from almost anywhere in Lyon. People have been advised to avoid the area.