Shiite militiamen on Tuesday seized the presidential palace in Yemen, a day after some of the worst battles in the capital in years, officials said.

The Houthi fighters, who control the capital Saana, entered the compound housing President Abdrabuh Mansur Hadi’s main office after a brief clash with security guards.

UN Secretary General Ban ki-Moon told an emergency Security Council meeting that he was “gravely concerned” over reports of the apparent bid to overthrow Hadi, and urged “all sides to immediately cease all hostilities, exercise maximum restraint, and take the necessary steps to restore full authority to the legitimate government institutions.” […]