Trappes (French: [tʁap] ⓘ) is a commune in the Yvelines department, Île-de-France region, Northern France.

[5] It also has Islamists among its large Muslim population, with 70 local people suspected of having left France to fight for the Islamic State, according to several sources.

[5][6] According to the French government, 67 people from Trappes have joined the Islamic State, and others have carried out attacks inside France.

[7][8][9] A man on the terrorism watch list of the French police, killed his mother and sister with a knife in Trappes on August 23, 2018.

However, French interior minister Gérard Collomb stated he was a man with mental health issues, rather than someone inspired by the organisation.