Documents released on Monday give new insight into what the controversial rapper 6ix9ine is likely to claim when he takes the stand at next week's racketeering trial: that his job was to make money for a notorious gang.

The "Gummo" rapper is expected to testify in the trial of accused Nine Trey Gangsta Bloods gang members Anthony "Harv" Ellison and Aljermiah "Nuke" Mack, the only defendants in the sprawling case who have not yet pleaded guilty. A letter from U.S. Attorney Geoffrey Berman dated September 9 lays out a number of plans the government has for the trial, including that 6ix9ine will talk about his role within the gang. "The Government expects CW-2 [6ix9ine] to testify that one of his roles in Nine Trey was to make money for the gang and distribute that money among Nine Trey members," the letter reads.

The letter also mentions that the government wants to share text messages Ellison sent in the time period immediately before and after 6ix9ine's alleged kidnapping: inquiring about 6ix9ine's whereabouts beforehand and being informed about media coverage of the incident afterwards. There are also messages between Ellison and an unnamed individual that the government contends are about purchasing 6ix9ine's jewelry that Ellison stole during the attack. Ellison's lawyer told Complex recently he will argue that the kidnapping was a publicity stunt.

The trial begins September 16 at the Thurgood Marshall Courthouse in Manhattan. According to the latest government estimates, it is expected to last a little less than three weeks.