Abdo Elwani Okaz/Saudi Gazette AL-HARTH — Cleaning workers at Al-Harth General Hospital in the Jazan region have found unusual objects inside the hospital's courtyard. The workers, who were employees of a cleaning contract company, said they were surprised by an explosion as they burned medical waste and dry leaves in the hospital's backyard. The hospital's administration immediately informed the security bodies and the Civil Defense. Firefighters quickly contained a fire that resulted from the explosion. A spokesman for the Jazan Civil Defense said no casualties were reported. He suggested that the explosion was due to a projectile left over from the Yemen war.