Anti-terrorism forces in France reportedly arrested four people on Friday accused of planning a terror attack, uncovering an amateur laboratory that held an explosive used in strikes in Paris and Brussels.

Three men, aged 20, 26 and 33, and one 16-year-old girl were taken into custody in the Montpelier region in southern France, officials said.

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Unconfirmed French reports claimed the group was planning a suicide bombing against a tourist site in Paris.

The arrests come one week after a man attacked soldiers with a machete near the Louvre. One of the soldiers was injured.