CNN reports n explosion near a pub in the northern Japanese city of Sapporo on Sunday night injured at least 42 people, including one critically. A subsequent fire caused one building to collapse. Residents reported smelling gas after the explosion and seeing broken windows in the area.The cause of the explosion, which occurred around 8:30 p.m. local time, is unknown, and emergency services continue to investigate. The Sapporo fire department told CNN that more than 20 fire engines were deployed. The number of reported injuries could rise.