On 19th December 2016 a Russian Ambassador was shot dead. Where did this incident happen?

On 19th December 2016 a Russian Ambassador was shot dead. Where did this incident happen?

دسمبر 2016 کو ایک روسی سفیر کو گولی مار کر ہلاک کر دیا گیا۔ یہ واقعہ کہاں پیش آیا؟
Explanation

Andrei Karlov, the Russian Ambassador to Turkey,

He was assassinated by Mevlut Mert Altıntas, an off-duty Turkish police officer,

He was assassinated at an art exhibition in Ankara, Turkey

He assassinated on the evening of 19 December 2016.