NEW YORK — A sixth person was charged Monday in the federal sports betting case involving ex-NBA player Jontay Porter, and authorities disclosed a text message Porter allegedly sent explaining how to cash in on his plans to bench himself in a January 2024 game.

The former Toronto Raptors centre already has pleaded guilty in the criminal case and was banned from the NBA for life. He admitted that he agreed to withdraw early from games, claiming illness or injury, so that those in the know could win big by betting on him to underperform expectations.

Although the new developments don’t affect the legal case against Porter, they put the scheme in what a court document says were his own words.

“Hit unders for the big numbers,” Porter wrote to an alleged conspirator on Jan. 26, 2024, according to a court complaint against yet another alleged schemer, Shane Hennen. He was arrested Sunday at the Las Vegas airport while boarding a flight to Panama.

“No blocks no steals. I’m going to play first 2-3 minute stint off the bench then when I get subbed out tell them my eye killing me again,” Porter wrote, according to the complaint. It identifies him only as “NBA Player 1” but makes clear through references — such as the details of his guilty plea last year — that it’s Porter.

He had scratched an eye during a game on Jan. 22, 2024, keeping conspirators in the loop by text even from the arena, according to the complaint. But he wasn’t on the injured list when the Raptors faced the L.A. Clippers four days later.

Porter ultimately played about 4 1/2 minutes in that game before saying he had aggravated the eye problem. Then he pulled out of a March 20 game against the Sacramento Kings after less than three minutes, saying he felt ill. His performance in both games fell well below what sportsbooks had anticipated.

Porter told a court in July that he got involved in the plot to try to clear his own gambling debts. He’s set to be sentenced in May. He could face anything from no jail time to 20 years behind bars; prosecutors have estimated his sentence at about 3 1/2 to four years in prison.

A message was sent to his lawyer Monday to seek comment on the developments.

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Hennen was released without bail after his arraignment Monday in Las Vegas on charges including wire fraud conspiracy. The court complaint alleges that he placed bets through proxies after co-conspirators alerted him to Porter’s plans for the Jan. 26 game, and that he also got a heads-up about the March 20 game and likely told other gamblers about it.

A message seeking comment was sent to his attorney.

Besides Hennen and Porter, four other people also have been charged to date. Two have pleaded guilty, a third has pleaded not guilty, and the fourth hasn’t entered a plea.

The complaint against Hennen alleges there were still more conspirators involved. It’s unclear whether more people may yet be arrested.