About 700 migrants and their supporters had invested Friday the Pantheon, to claim their regularization.

Twenty-one people were placed in administrative detention, after the brief occupation of the Pantheon Friday in Paris by undocumented people who came to claim their regularization, it was learned Saturday at the police headquarters. These 21 protesters, referred to "for violation of the law of foreigners", were to be placed in administrative detention center for the review of their situation, said the same source.

In addition, a protester was arrested and placed in custody for "willful acts of violence against a person holding public authority". It must be presented Sunday to a magistrate of the public prosecutor who will decide on possible legal consequences, indicated the parquet floor of Paris.

Twenty people gathered at midday in front of the police station of the fifth district of Paris, where the arrested people had been led, holding placards proclaiming "Release the black vests" or "racist police".

37 people were arrested on Friday

A total of 37 people, among hundreds of protesters gathered at the Pantheon, were arrested Friday "following identity checks," according to a police source. About 700 migrants and their supporters, according to participants, had invested the place at midday, on the initiative of the collectives "black vests" and "La Chapelle debout", which support the undocumented. This emblematic place of the French Republic was gradually evacuated at the end of the afternoon.

Surprise action of the Black Vests who currently occupy the Pantheon and claim the regularization of undocumented migrants and a meeting with Prime Minister Édouard Philippe. GiletsNoirs # # # Paris Pantheon
@ Chapelledeboutpic.twitter.com / KOYkMOmX8d

- Charles Baudry (@CharlesBaudry) July 12, 2019

Migrants and collectives - including the "black vests" who routinely carry out punches in support of undocumented migrants - had chosen the Pantheon for its "great men" and "symbols of the fight against slavery".