Muslims in France attended Catholic mass across several churches and cathedrals in an act of solidarity following the death of 84 year old priest Fr Jacques Hamel.
"Today we wanted to show physically, by kissing the family of Jacques Hamel, by kissing His Grace Lebrun in front of everybody, so they know that the two communities are united," Mohammed Karabila, President of Saint-Etienne-du-Rouvray Mosque, told BBC.
In the horrific incident, IS assailants took hostages inside the church and slit the priest's throat as he was leading prayers. The Associated Press reported that a nun embraced the Muslim attendees in her mass service.
They carried banner which read, "Love for all. Hate for none."
"We are very moved by the presence of our Muslim friends and I believe it is a courageous act that they did by coming to us," said Dominique Lebrun, the Archbishop of Rouen.
Muslims also attended Mass in Paris' Notre Dame Cathedral, and in the southern French city of Nice where just a few weeks ago a deadly mass attack took place when a 19 tonne cargo truck mowed down and killed 84 people, injuring 308 more.
The Muslim leaders sat on the benches of the churches in Italy and urged for peace and dialogue.
According to BBC, a member of the Union of Islamic Communities in Italy said, "Mosques are not a place in which fanatics become radicalized. Mosques do the opposite of terrorism; they diffuse peace and dialogue."