(CNN) — Authorities have arrested a French national suspected of planning an attack, according to Interior Minister Bernard Cazeneuve.
The plan was in an “advanced stage” and the person arrested was implicated at a “high level,” Cazeneuve said Thursday. He accused the individual of belonging to a terror network that planned to strike within France.
The arrest was the result of a detailed investigation that took place over several weeks, he said during a televised address.
Following what Cazeneuve characterized as the “important arrest,” French police carried out an anti-terror operation in Argenteuil, outside Paris. Residents of a building were evacuated.
CNN’s Pierre Meilhan contributed to this report.
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