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DENVER (AP) -- A company accused of duping investors out of $30 million hired former Denver Broncos quarterback John Elway to speak at two events in Colorado.

The Denver Post reported Wednesday that the two-time Super Bowl champion spoke at conferences in Denver and Colorado Springs for Speed of Wealth LLC.

The Securities and Exchange Commission alleges that the Centennial, Colo.-based company was used to find investors for Pennsylvania-based Mantria Corp. Authorities allege the companies were running a Ponzi-like scheme that lured 300 investors nationwide in purported eco-friendly investments.

Speed of Wealth founder Wayde McKelvy sent an e-mail to customers denying the allegations.

Elway's business manager says he didn't promote specific investments, endorse the company or invest personally in Mantria or Speed of Wealth.

(Copyright 2009 by The Associated Press. All Rights Reserved.)