The gunman referenced the situation in Aleppo after he shot the ambassador [Burhan Ozbilici/AP]

Several media outlets reported a gunfight later ensued after Karlov was shot.

“On behalf of my country and my people I once again extend my condolences to Russian President Vladimir Putin and the friendly Russian people,” said Erdogan.

Putin promised a response to the assassination.

“The crime that has been committed is undoubtedly a provocation aimed at derailing the ties between Russia

The assailant is seen in this photo at the rear on the left [Burhan Ozbilici/AP]