A New York City father and son have been arrested and indicted on allegations of selling fentanyl and oxycodone on the underground drug website AlphaBay, which was seized and closed by federal law enforcement in July.

The indictment comes days after six Californians were indicted on similar charges of drug trafficking on AlphaBay, suggesting that federal law enforcement is now ready to start prosecuting at least some of the dealers that used the notorious site.

According to a newly issued criminal complaint, Michael Luciano admitted in July to selling the opioid drugs, with the help of his son Philip Luciano, out of his Staten Island home.

Michael told Paul Nugent, a special agent with Homeland Security Investigations, that he began ordering fentanyl online in 2015 from China, but he first bought it "over the regular Internet, not the dark web." When his packages were seized, he turned to AlphaBay, with his son's help, selling under the name Zane61.

The father, who had a prescription for fentanyl patches, sold them on the drug website. When AlphaBay was shut down, the duo lost around five bitcoins, which is currently worth around $20,450.

After the July interview with Michael Luciano, law enforcement seized and searched Philip Luciano's iPhone. In addition to revealing his school e-mail address and his preferred online dating app, the iPhone apparently had pictures of drugs, his Coinbase wallet, and this hilarious text exchange, which is reprinted here verbatim.

On or about March 15, 2017, PHILIP had the following exchange with an individual whose account name started with "Mike:" MIKE: Wake up

PHILIP: Yea

MIKE: The rent is here!!! (sent with iMessage effect)

MIKE: Rent

MIKE: Fent. Based on my training, experience, and involvement in this investigation, I believe that "Mike" is MICHAEL LUCIANO, the defendant, and he was urging his son PHILIP to wake up because a new shipment of fentanyl had arrived at their home.

Agents also searched Philip's iPad, which, among other incriminating pieces of evidence, contained the password to the Zane61 account in the "Notes" app, pictures of fentanyl patches, and "a Web browser search, in or about July 2017, of 'safest wallet to transfer tumble,'" referring to a method of obscuring Bitcoin transactions.

Philip Luciano had graduated with a bachelor's degree in nursing from Wagner College on Staten Island in May 2017.

No court appearances have been scheduled.