Berlin, Ramadan 27, 1436, Jul 14, 2015, SPA -- A large fire sent dense black smoke billowing over the northern Swiss city of Olten on Tuesday; initial police reports said nobody was injured. Local media quoted witnesses reporting several explosions from the fire, which broke out in the afternoon near the center of the city. Solothurn cantonal (state) police said the fire started on a construction site. "At the moment we assume there were no injuries," AP quoted police spokesman Thomas Kummer as saying. --SPA 01:13 LOCAL TIME 22:13 GMT www.spa.gov.sa/w