FXStreet (Mumbai) - The safe haven assets – gold, treasuries and Japanese Yen – are on a positive footing due to sell-off in the European stocks and news of a plane crash on the Syria-Turkey border. The rumours are doing the rounds that the unidentified plane shot down while violating Turkish border hailed from Russia. According to a Turkish military official, the warplane was warned of violating the country's airspace before a Turkish F-16 fighter jet shot it down. Gold, which strengthened moderately in Asia, extended gains to hit a fresh session high of USD 1073/Oz. Meanwhile, treasury yields dipped across the yield curve. The pan-European Euro Stoxx 50 index fell more than 1%, dragging the S&P 500 index futures lower. For more information, read our latest forex news.