On the 5th September, Didier was at the reception hall, Friant Street. As Mass was starting at 11:30, the main celebrant, looking for the key of the tabernacle, went to see Didier but found him lying unconscious on the floor. He was brought to a nearby hospital and died at 1:30 on the 6th September.
Didier spent many years as a missionary in Zambia and South Africa. He was 81 years old, 55 as a missionary. The funerals took place in Paris on the 9th September. May his soul rest in peace.