Muslims attend Catholic Mass in churches around France on Sunday to unite and empathy following the brutal murder of a priest in jihadist last week.
More than 100 Muslims were among the 2,000 believers who flocked to the 11th-century Gothic cathedral of Rouen, near the town of Normandy where the two jihadi slit the neck of 85-year-old Father Jacques Hamel.
Muslims responded to the call of the French Muslim council CFCM to show "solidarity and compassion" for the killing of a priest on July 26.
Many wept at the sign of peace, a regular part of the liturgy when the believers greet Kissing on the cheek and shaking hands with each other.