Islamic State in Yemen attacks presidential palace in Aden, Yemen

A suicide car bomber detonated his vehicle as he rammed into cement blocks protecting the gate of the presidential palace in Aden, Yemen, the local police chief Shalal Shaei told Al Jazeera.

Shaei said at least seven people were killed and another 15 people wounded by the blast. The dead included soldiers. Another report claimed five people were killed. A group affiliated with the Islamic State has claimed responsibility for the attack. The Islamic State is in competition with Al Qaeda in the Arabia Peninsula (AQAP), who has taken advantage of the civil war against the Houthi rebels to extend its area of influence and control in Yemen. It has also allied itself with local Sunni tribes to fight back against the Houthis. It virtually controls the province of Hadrahmut east of Aden and its capital city, Mukalla.

A Saudi-led coalition has beaten back the Houthis from the port city of Aden and surrounding areas. The Saudis have led an extensive bombing campaign against Houthi-held areas since last March. Prime Minister Mansour Hadi recently returned to Yemen to set up his government. He and his government had long been forced into exile in Saudi Arabia because of the Houthi advance.

A report by a panel of 18 UN experts documented 119 sorties by the Saudi-led coalition "relating to violations of international humanitarian law" and claimed that "many attacks involved multiple air strikes on multiple civilian objects." Rights groups in the U.S. and UK have called on their government to stop sales of weapons to the Saudis that could be used in these attacks. The report said all sides had violated international humanitarian law. Evidence shows that the Saudis used cluster bombs. There is an international ban on their use but neither Saudi Arabia nor the U.S. have signed on to the ban.

The aid agency Medicins Sans Frontieres (MSF) demanded an investigation of an attack on one of its hospitals that it claims killed six people and wounded at least seven others. Most were medical staff and patients. In the last three months MSF has seen two hospitals, a clinic and an ambulance hit.Raquel Ayora, MSF Director of Operations said: “The way war is being waged in Yemen is causing enormous suffering and shows that the warring parties do not recognize or respect the protected status of hospitals and medical facilities. We witness the devastating consequences of this on people trapped in conflict zones on a daily basis.”Nearly 6,000 people have been killed, around half of them civilians, since the coalition began air strikes in March of 2014..