Assailants have set off explosives and opened fire in an attack on the premises of the Turkish state-run aerospace and defence company TUSAS, killing four people and wounding several, President Recep Tayyip Erdogan said.Two of the attackers - a man and a woman - were also killed, interior minister Ali Yerlikaya said.

Assailants have set off explosives and opened fire in an attack on the premises of the Turkish state-run aerospace and defence company TUSAS, killing four people and wounding several, President Recep Tayyip Erdogan said.Two of the attackers - a man and a woman - were also killed, interior minister Ali Yerlikaya said.