Four Arab states that have cut diplomatic and transport ties with Qatar said today that they have opened up air routes that Qatari planes can use in case of emergency. <br/><br/>The United Arab Emirates' Foreign Ministry said that nine corridors were being opened in coordination with the International Civil Aviation Organization. <br/><br/>The UAE, Egypt, Saudi Arabia and Bahrain cut links with Qatar in early June over allegations it supports extremists. Qatar denies the charge. <br/><br/>The move forced state-backed Qatar Airways, one of the region's biggest airlines, to reroute many of its flights and scrap frequent routes to major regional destinations such as Dubai.