An explosion happened for an unknown reason in a building under renovation in the Greece’s capital city of Athens. 3 people were injured in the explosion. It’s been stated that one of the injured is in serious condition, and the other 2 had respiratory problems. Also many structures and vehicles were damaged in the explosion that occurred in a building near the Temple of Olympian Zeus. It’s being considered that the explosion may have occurred due to a gas leak. Meanwhile, an investigation has launched regarding the incident.