The first explosion set off a chain of blasts in Rome and was so loud and violent that it struck nearby buildings "like an earthquake."

Dozens of people were injured, including 10 police officers and a firefighter, officials said. The cause of the blast was not immediately clear.

Numerous people have been injured after an explosion at a gas station in Rome, Italy, on Friday, July 4. According to local outlet La Stampa, 29 people have reportedly sustained injuries so far, including nine police officers and the plant manager. 40 people have also reportedly been rescued.