The Bishop of Derry, Donal McKeown, and the Bishop of Derry and Raphoe, Ken Good, have called at the Guildhall to sign the Book of Condolence for victims of the Paris massacres.
The book was opened on Saturday by Mayor Elisha McCallion.
“I think everyone is totally shocked and horrified at the scenes in Paris overnight and our thoughts and prayers are with all those affected by this devastating incident,” she said.
“The people of Derry and Strabane stand united with the people of Paris in friendship and solidarity as they try to come to terms with what has happened.
“The Books of Condolence at the Guildhall and Strabane will provide the local community with an opportunity to show their support for the people of France and I would encourage people to come along and show that we care.”
Meanwhile, the Derry Anti War Coalition is holding a solidarity rally at 6pm on Monday in Guildhall Square to stand with the people of Paris and Beirut.
“The events in Paris on Friday night have shocked the world,” a spokesperson said.
“Concert goers, people eating in restaurants, ordinary Parisians enjoying the start of the weekend were slaughtered.
“In Beirut on Thursday around 50 innocent people were murdered when bombs exploded in a residential suburb.
“In Syria, in Palestine and across the parts of the Middle East and Africa carnage like this is all too common.”