New details about Kim Kardashian’s 20-carat engagement ring, which was stolen from her last August during an armed robbery, have surfaced.

Two unidentified brothers that were arrested earlier this week have been accused of “disposing” of the pricey bauble. The men, both in their 50s, are suspected to have helped transport the missing jewelry and could potentially aid authorities in tracking the whereabouts of the $4 million ring.

“They are involved in the diamond trade and are thought to have handled the stolen jewelry,” a police source claims. “Their homes have been searched from top to bottom, and so has a jewelry shop in Paris which is also linked to them. The jewelry has not yet been found, but these brothers could lead us to it over the coming days.”

The insider also claims the men are frequent visitors to Antwerp, where diamonds and other unsourced items are regularly exchanged for millions of dollars.

“It’s a town where jewelry can be sold on with no questions asked,” the source says. “The men know the industry inside out, and may well know exactly where the ring went.”

So far, 17 people have been arrested in connection of the crime, which occurred when Kardashian was alone in her hotel room.