France-s interior minister said on Monday that police operations are underway into dozens of people who allegedly issued messages of support for the attacker after the beheading of a history teacher near Paris.

Gerald Darmanin said on French radio Europe 1 that at least 80 cases of hate speech have been reported since Friday-s attack. Samuel Paty was beheaded in Conflans-Sainte-Honorine, northwest of Paris, by a 18-year-old Moscow-born Chechen refugee, who was later shot dead by police. Police officials said Paty had discussed caricatures of Islam-s Prophet with his class, leading to threats.