Secretary General Ban Ki-moon on Tuesday condemned the latest clashes between Houthi fighters and the presidential guard in Yemen's capital Sanaa and called for an end to the hostilities and immediate restoration of order. According to Reuters, Ban's spokesman Stephane Dujarric told reporters that U.N. special envoy to Yemen Jamal Benomar, who was in Qatar, is on his way back to Yemen. "The UN Secretary General is gravely concerned about the deteriorating situation in Yemen," the U.N. press office said in a statement. "He deplores the heavy fighting between Houthi armed groups and Yemeni presidential guards throughout Sanaa."