France's Socialist government also took a first step toward banning the security branch of a nationalist youth group that the suspect and four alleged accomplices had claimed ties with, according to the Paris prosecutor.
The death of 18-year-old Clement Meric, a student at Paris' prestigious Sciences-Po political science university, has renewed concerns that hate groups are on the rise, not just in France, but across Europe.
The four suspects were being held, and a fifth suspect, a 32-year-old woman named Katya who was said to be Esteban's girlfriend, was facing the prospect of preliminary charges for complicity in group violence, Molins said. The suspects, under police questioning, acknowledged links to an ultranationalist group known as "Troisieme Voie" or Third Way, he said. None of the suspects had a prior criminal record, though Esteban was known to police for possession of banned weapons in Paris in May 2011, the prosecutor said.
Militant extreme-right groups have become increasingly visible in France, and the government said after Meric's death that it wants to ban fascist and neo-Nazi groups. Extreme-right groups have gained attention in numerous European countries, particularly Greece, where the Golden Dawn party, broadly vilified for alleged Nazi sympathies and violence against immigrants, holds seats in parliament. Last month, the World Jewish Congress said it's greatly concerned about the emergence of what it called neo-Nazi parties in places like Greece, Hungary and Germany.
