Militants attacked Yemen's main prison on Thursday, killing seven and enabling 29 inmates to escape—including 19 convicted members of al Qaeda. The attack began with a car bomb followed by an exchange of gunfire between the militants and the guards at the Sanaa Central Prison. Security officials believe it was an inside job and that the group of militants must have been tipped off. They arrived in groups of three, one of which detonated the car bomb. There were also members positioned and firing from rooftops surrounding the prison. Of the al Qaeda members who escaped, three were convicted for planning to assassinate the Yemeni president.