Here we go again. Months ago, we were the first to report that Amazon had removed Swagway hoverboards from its website, a situation that was reversed soon after with no explanation from the company.

But on Tuesday, searches for hoverboards on Amazon returned no results, apart from some accessories. It appears that all hoverboards, regardless of brand, have now been scrubbed from the site, days after the U.S. government declared them unsafe.

In fact, even an advertisement on the site for the Razor Hovertrax, when clicked, takes users to a 404 "not a functioning page" location on Amazon. If you click on a specific brand for your hoverboard search, most brands show up with blank pages, except for Swagway, which reads "temporarily out of stock."

You can still use Amazon to buy hoverboard wheels, carrying cases and stickers, but based on our searches, the rideable devices themselves are no longer for sale on the site.

A search for hoverboards on Amazon returns no results for the devices themselves, only accessories.

For months, Mashable has repeatedly asked Amazon for details on its hoverboard policy with no response from the company. Then, in January, the Consumer Product Safety Commission (CPSC) praised Amazon for offering refunds to customers who had purchased hoverboards on its site.

"I want to commend Amazon for voluntarily stepping up, providing a free remedy and putting customer safety first," CPSC chairman Elliot F. Kaye said at the time.

However, Amazon posted no specific hoverboard policy notice on its website, nor did it respond to additional requests for confirmation from Mashable.

Nevertheless, despite Amazon's silence, it appears that the company has now decided to remove all hoverboards from its site in the wake of the CPSC's safety notice on Friday.

This would make it the third major retailer to halt hoverboard sales, including Toys "R" Us on Saturday and Target on Monday.

UPDATE, 4:25 p.m. ET: After throwing an entire team at the problem, we finally managed to find at least one obscure hoverboard still on sale on the site. It's called the "Cyncbit E-board: 2nd Generation Smart Self Balancing Technology," and it's listed as "in stock." However, given the disappearance of all the other hoverboards on Amazon, it's quite possible that this item may have just been missed due to its rather odd name (E-board) and description (Self Balancing Technology).