A U.S. Army Special Forces master sergeant was arrested for allegedly using classified information to make extremely profitable bets on the Polymarket prediction market related to the American military mission that captured Venezuelan leader Nicolás Maduro, the Department of Justice said Thursday.

The sergeant, Gannon Ken Van Dyke, “was involved in the planning and execution of Operation Absolute Resolve,” which apprehended Maduro and his wife, Cilia Flores, in early January, the DOJ said.

Van Dyke, 38, wagered a total of about $33,000 in 13 or so bets in the week leading up to that operation, with the knowledge that the United States was secretly planning military action against Maduro, according to an indictment unsealed Thursday in U.S. District Court in Manhattan.

The bets won Van Dyke nearly $410,000, the indictment alleges.

The arrest of Van Dyke, who has been on active duty in the Army since 2008, comes as Polymarket and Kalshi have grown in popularity and as concerns have grown about people with inside information making wagers on those prediction market platforms.