At least 15 workers of a food factory including six women, were killed and eight wounded in a series of Saudi-led airstrikes in Sanaa on Tuesday.The airstrikes destroyed two food factories in Nahda quarter near the information ministry in downtown Sanaa, Xinhua news agency reported.Sanaa is under the control of the Shia Houthi group and allies of former President Ali Abdullah Saleh.The main mountain bridge road linking Sanaa and the southern provinces was destroyed, cutting off travel and food supplies between them.Saudi Arabia intervened in Yemen's conflict in March 2015, nearly six months after the Houthi group and Saleh forces stormed Sanaa and drove out the internationally recognised government of President Abd-Rabbu Mansour Hadi to exile.The intervention triggered a more devastating civil war that has so far claimed over 6,400 lives and displaced more than two million people.The deadly military escalation came four days after the UN peace talks in Kuwait between Yemeni parties broke down.