The dragnet tightened around the Louvre on Thursday.

Five more people were seized in the crown-jewels heist — including a suspect tied by DNA — the Paris prosecutor said, widening the sweep across the capital and its suburbs.

Authorities said three of the four alleged members of the "commando" team, as French media have dubbed the robbers, are now in custody.

The late-night operations in Paris and nearby Seine-Saint-Denis lift the total arrested to seven.

Prosecutor Laure Beccuau told RTL that one detainee is suspected of belonging to the brazen quartet that burst into the Apollo Gallery in broad daylight on Oct. 19; others held “may be able to inform us about how the events unfolded.”

Beccuau called the response an "exceptional mobilization" — about 100 investigators, seven days a week, with roughly 150 forensic samples analyzed and 189 items sealed as evidence.

Even so, she said the latest arrests did not uncover the loot — a trove valued around $102 million that includes a diamond-and-emerald necklace Napoleon gave to Empress Marie-Louise as a wedding gift, jewels tied to 19th-century Queens Marie-Amélie and Hortense, and Empress Eugénie’s pearl-and-diamond tiara.

Only one relic has surfaced so far — Eugénie’s crown, damaged but salvageable, dropped in the escape.

Beccuau renewed her appeal: "These jewels are now, of course, unsellable… There’s still time to give them back."

Experts warn the gold could be melted and the stones re-cut to erase their past.

French police have acknowledged major gaps in the Louvre’s defenses, turning an audacious theft — carried out as visitors walked its corridors — into a national reckoning over how France protects its treasures.

Paris police chief Patrice Faure told senators the first alert to police came not from the Louvre’s security systems but from a cyclist outside who dialed the emergency line after seeing helmeted men with a basket lift.

Two earlier suspects, men aged 34 and 39 from Aubervilliers, north of Paris, were charged Wednesday with theft by an organized gang and criminal conspiracy after nearly 96 hours in custody.

Beccuau said both gave "minimalist" statements and "partially admitted" their involvement.

One was stopped at Charles-de-Gaulle Airport with a one-way ticket to Algeria; his DNA matched a scooter used in the getaway.

French law normally keeps active investigations under a shroud of secrecy to protect police work and victims’ privacy.

Only the prosecutor may speak publicly, though in high-profile cases police unions have occasionally shared partial details.

The brazen smash-and-grab inside the world’s most-visited museum stunned the heritage world.

Four men, a lift truck and a stopwatch turned the Apollo Gallery’s blaze of gold and light into a crime scene — and a test of how France guards what it holds most dear.

AP video shot by Oleg Cetinic