Four people were injured Monday after a suspected gas explosion at a bar in a building in Tokyo's Shimbashi district caused a fire and left the surrounding area covered in debris.Firetrucks arrived at the scene, located in an area full of restaurants and offices, after an eyewitness made an emergency call to police at around 3:15 p.m. Three of the four injured people including the owner of the bar are believed to be seriously hurt, police said.The police said they received information that what appeared to be gas could be smelt inside the building, and that it is possible there was a gas le…READ FULL ARTICLE