for more, let's get straight across to our corresponding in istanbul. johan julia, turkeys, president, ardon has said this smells like terror. what do you think makes him say that or turkish authorities now officially treating this as an act of terrorism that was confirmed by vice president for october visited the scene of the blast because president ad on himself is now on his way to the g. 20 summit in indonesia, the vice president also said that a woman was lightly involved in the attack, but he did not provide further detail so far. no one has claimed this blast. this attack and touch authorities have not blamed any particular perpetrators or groups . but what we do know for sure this blast has really hit the heart of the city. the is to it's decline avenue, as you mentioned, is a very popular spot. even on a sunday, shops and restaurants are open. so at the moment of the exploit explosion, they were likely thousands, if not tens of thousands of people in the area. there must be a tough night for a stumble. how have people there been reacting? what was fear and panic in the immedi