AlQa'dah 12, 1434, Sep 18, 2013, SPA -- The United Nations on Wednesday defended the report by its chemical-weapons experts, saying its conclusion that rockets loaded with sarin gas were used in an August 21 attack should not be questioned. "The findings in that report are indisputable," U.N. spokesman Martin Nesirky told reporters. "They speak for themselves, and this was a thoroughly objective report on that specific incident." Nesirky explained that the chain of custody of all environmental and biomedical samples taken by the inspectors was meticulously documented. He added that the experts would return to Syria as soon as possible to continue their investigation into a March incident at Khan Al-Asal.