The British founder of the 'White Helmets' emergency response group in Syria, James Le Mesurier, was found dead near his home in Istanbul on early Monday.
The footage comes from where his apartment is reported to be located, in the Beyoglu district.
The circumstances of his death are as yet unknown and are currently being investigated by Turkish authorities.
Le Mesurier was the director of... Еще Mayday Rescue, a non-profit organisation that trained members of the Syria Civil Defence, also known as the 'White Helmets'. He was awarded an Order of the British Empire for his work in Syria.