[originaltext]　　(1) Turkish prosecutors have charged three people with negligen

　　(1) Turkish prosecutors have charged three people with negligence and causing deaths in connection with the country’s worst mining disaster. Last Tuesday, 301 people died at the Soma coal mine after an explosion and fire. Witnesses around heard the explosion and saw the heavy blaze. James Reynolds reports. " Turkish state media reports that several dozen prosecutors are investigating the Soma mine collapse, and they have now made their first arrests. The police have taken some of the detainees to Soma’s well-guarded court house for questioning. Their names have not been released, but Turkey’s Doan News Agency reports that (2) those arrested include the mine’s general manager, and also its operation manager. On Friday, the company which owns the mine, repeatedly denied accusations of negligence and poor safety standards. "
　　1. What happened in Turkey?
　　2. Who was arrested due to the event?