On Monday, American prosecutors announced that two of the four men involved with two Android piracy sites, snappzmarket.com and appbucket.net, have pleaded guilty to copyright infringement. The case marks the first time that US authorities have successfully prosecuted a case involving pirate app stores.

The FBI shut down the sites listed above in August 2012 and filed charges against the quartet of men in January 2014.

The two men, Nicholas Anthony Narbone, 26, of Orlando, Florida, and Thomas Allen Dye, 21, of Jacksonville, Florida, pleaded guilty to one count each of conspiracy to commit criminal copyright infringement. They are set to be sentenced in the coming months.

Charges remain against Kody Jon Peterson and Thomas Pace, who are accused of distributing another one million copyrighted apps through AppBucket from August 2010 to August 2012.

According to Dye’s guilty plea agreement, which was filed in the Atlanta federal court on March 10, 2014, he could face a maximum penalty of five years in prison and a maximum fine of $250,000. Peterson's plea was not yet public when this article was published.

That same document states Dye will act “in an undercover investigative capacity to the best of his ability” upon the government’s request.