At least one person was injured from a powerful explosion in central Athens early Wednesday which damaged an office block and smashed nearby storefronts, writes greekreporter.com.

The pre-dawn blast occurred 200 meters from the ancient Temple of Olympian Zeus on the busy Syngrou Avenue.

The blast caused a fire on the mezzanine floor, which spread to the first floor, while extensive damage has been done to other buildings in the area due to the shock wave. The wreckage caused damage to many vehicles.

Police say gas leak responsible for Athens explosion. The Investigative Department of the Fire Brigade rules out the possibility of a terrorist act and estimates that a gas leak was the cause of the explosion.