"I walked around the corner into wall of smoke and fire from the blast, glass flew everywhere and was falling," said Ali Abdullah, who lives on an adjoining street.
Bomb kills Egypt's top prosecutor as he drives to work →
"Of course, it is an escalation," Abdullah said. "It is clear now there has not been a knockout and a complete demolition of Houthi firepower. So we have to contend with this."
Saudi Arabia shoots down Scud missile fired from Yemen's Shiite rebels →