By Steve Large

SACRAMENTO (CBS13) — The mystery donor to an effort to put a new Sacramento Kings arena to a vote has been revealed as Seattle investor Chris Hansen, a source revealed to CBS13’s Steve Large on Friday.

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The Fair Political Practices Commission is holding a press conference the day after it filed a lawsuit to reveal the money behind a campaign to put the proposed downtown arena to a vote.

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Hansen was the face and money behind an effort to move the Kings to Seattle to fill the void left when the NBA moved the Seattle SuperSonics to Oklahoma City in 2008. The group led by Hansen offered as much as $625 million for the Sacramento Kings.

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The NBA has the city of Sacramento on a 2017 deadline to construct a new arena. Currently, the plan is to start construction in a year. Putting the arena issue to a vote would likely delay the construction process.