The Egyptian flag lit up the facade of the Tel Aviv municipality building Friday evening, hours after terrorists attacked a crowded mosque in the Sinai Peninsula, killing at least 235 people.

The building has been illuminated in the colors of various flags following other international terror attacks, but the gesture has only been made towards an Arab country (also Egypt) once before: in May, when 29 Christian Copts were killed in a deadly shooting attack near Cairo.

Expressions of solidarity with Egypt were likely to take place around the world. Earlier Paris’s mayor said the Eiffel Tower would go black at midnight in homage to the victims of the deadly assault.

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Friday’s attack targeted a mosque frequented by Sufis, members of Islam’s mystical movement, in the north Sinai town of Bir al-Abd. Islamic militants, including the local affiliate of the Islamic State group, consider Sufis heretics because of their less literal interpretations of the faith.

עיריית תל אביב עם המצרים הערב pic.twitter.com/XFR0Zv5fWw — nir dvori (@ndvori) November 24, 2017

Officials said terrorists in four off-road vehicles bombed the mosque and fired on worshipers during the sermon segment of Friday prayers.

AP contributed to this report.