Security is tight near the United Nations building in the Yemeni capital Sanaa. The UN closed its offices after reports of potential car bombs in the city.<br /><br />Police troops in Yemeni capital Sanaa have been on high alert since an attack last week on the Yemeni Defence Ministry compound. <br /><br />Disturbing CCTV footage has been released of the assault in which 52 people were killed and 167 injured. <br /><br />The dramatic images show a suicide bomber and gunmen attacking a hospital inside the compound on the morning of December 5 as ministry staff were arriving for work.<br /><br />The suicide bomber can be seen driving a car packed with explosives into the gate of the compound, followed by a huge burst of flames. Gunmen in another vehicle sped in and opened fire on soldiers, doctors and nurses working at the hospital.<br /><br />The footage also shows an attacker arming a grenade’s fuse then lobbing it into a group of workers before running away. The grenade can be seen exploding. <br /><br />The US military raised its alert status in the region after the coordinated strikes. Yemen is home to what Washington has called the main stronghold of al-Qaeda in the Arabian Peninsula (AQAP).<br /><br />Meanwhile, 15 people on their way to a wedding in Yemen were killed in an air strike after their party was mistaken for an AQAP convoy, according to local security officials.<br /><br />One security official said: “An air strike missed its target and hit a wedding car convoy, ten people were killed immediately and another five who were injured died after being admitted to the hospital.” <br /><br />Yemen is among a handful of countries where the US acknowledges using drones, although it does not comment on the practice.<br /><br />Human Rights Watch said in a detailed report in August that US missile strikes, including armed drone attacks, had killed dozens of civilians in Yemen.
