Since federal prosecutors obtained the cooperation of GOP Rep. Matt Gaetz's once close-ally in May, sources tell ABC News the ongoing investigation, which includes sex trafficking allegations involving Gaetz, has engulfed the tight-knit Central Florida political scene as prosecutors continue their investigation of the Florida congressman.

Former Seminole County tax collector Joel Greenberg, who reached a plea deal last month, has been assisting federal agents in the sprawling probe that has recently revved up its focus on alleged corruption and fraud stemming from Greenberg's time in office and beyond, multiple sources familiar with the matter told ABC News.

The former tax collector pleaded guilty in May to a host of crimes including charges of stalking, identity theft, wire fraud and conspiracy to bribe a public official, as well as a sex trafficking charge. Greenberg is prepared to hand over evidence and testimony that could implicate Gaetz and others, sources told ABC News.

Sources told ABC News that prosecutors believe a decision about whether or not to bring charges against Gaetz could come as early as July.