Atlantis, a black market website and competitor to Silk Road, announced its closure on Friday, citing “security reasons outside [its] control.” The site urged users to withdraw their Bitcoins and Litecoins from their accounts, as they “will not be recoverable a week from now.”

Atlantis Market launched in March of this year and released a flashy YouTube campaign in mid-summer. The site claimed to be like Silk Road with a better user experience, “cheaper rates,” and more security features.

The site went through some downtime in its short period of existence, mainly in the last few weeks. According to Daily Dot, it was accused of being both a poor Silk Road imitation and a honeypot for police.

Forbes gave the site a cursory yet favorable review in comparison to its competitors, but Atlantis never came close to the volume of business that Silk Road processes (between $30 million and $45 million in transactions, according to one professor at Carnegie Mellon cited by Daily Dot).

Atlantis offered no more details on the reason for the shutdown or whether its customers ought to be concerned for their security following the event. Coins that are not withdrawn from the site will be donated to “a drug-related charity of [Atlantis’s] choosing.”