The International airport at Sanaa in Yemen has closed as fighting in the city appears to have escalated. All flights have been cancelled leaving hundreds of passengers stranded. Sanaa residents also report hearing explosions near the presidential palace.
President Ali Abdullah Saleh is refusing to step down despite months of civil unrest against his 33-year rule.
Further violence has broken out southern city of Taiz. Reuters claim that government forces opened fire on demonstrators and fatalities are reported
Commentators fear the country is sliding inexorably into civil war.