A shipment of Nvidia hardware valued at $11.4 million disappeared while being transported from Oakland to Texas over the summer, and more than two months after the theft, authorities have announced neither arrests nor any recovery of the cargo.

According to reporting by The Mercury News, six pallets of unidentified Nvidia equipment departed Oakland on August 29 aboard a truck headed for Fort Worth, Texas. The hardware was collected on schedule by a truck displaying the logo of a food transportation company, after which it dropped off the grid entirely.

The loss only came to light in early September, when the buyers realized the shipment had never arrived at its destination. The delay in noticing the theft gave those responsible a significant head start before any investigation could begin.

Investigators working to retrace the truck's journey determined that it made several stops lasting multiple hours after picking up the hardware. The trail eventually went cold somewhere in San Bernardino County, California, where police lost track of the vehicle.

Oakland police confirmed that a grand theft report was filed on September 13 and said the investigation is still ongoing. Officials have not disclosed what specific Nvidia hardware was taken, nor have they explained precisely how the theft was pulled off.

The Oakland case is the most recent example of an escalating series of audacious hardware heists. As reported recently by Ars Technica's Ashley Belanger, thieves have stolen more than $100 million worth of similar shipments since June, pointing to a coordinated and growing criminal enterprise targeting valuable tech cargo.

Investigators cited by NBC News described the criminals as methodical and sophisticated. Their techniques reportedly include spoofing GPS location data to mask a shipment's true route and even orchestrating collisions with police escort vehicles to throw off pursuit.

Once stolen, the components can be dismantled and funneled into gray-market sales. In other cases, the hardware is shipped overseas, where it may end up in regions subject to restrictions on access to American technology.

For now, the fate of the six pallets that left Oakland in late August remains unknown, and the open investigation offers few public answers about who carried out the theft or where the missing hardware ended up.