They were mostly people from the Maghreb but also included Spanish, Portuguese and Italians. They were sent, in a tragic echo of the Vichy regime, on public buses to the Parc des Expositions, the Vélodrome d'Hiver and other such centres that had been used under Vichy as internment centers. A massacre occurred in the courtyards of the Prefecture of Police, and the detainees were held without specific charges. In the following days at the Parc des Expositions, detainees were subject to inhumane treatments. Arrests continued throughout October 1961. Meanwhile, bodies were found floating in the Seine River.