James Le Messueri, co-founder of Syrian white helmets, was found dead at his home in the Turkish city of Istanbul. He seems to have fallen from the balcony, he may have killed himself.
The body was found by people on the way to the mosque.
Le Messierrier's wife claims to have stated that she and her husband took sleeping pills and went to bed. What happened after that is now under investigation.
White helmets helped many thousands, especially in the besieged and bombed part of Aleppo.
Briton Le Mézourie was not only the co-founder of Syrian white helmets; he was also the founder of the Mayday rescue group. This organization trains Syrian white helmets.