COLUMBIA (WACH, CNN, AP) -- A watchdog group wants South Carolina's top prosecutor to investigate whether someone gave money to the unemployed, unknown man who won the Democratic U.S. Senate primary.
Attorney General Henry McMaster told CNN he has no plans to investigate Greene's win.
"No one has provided this office with any credible allegation or information suggesting criminal wrongdoing," spokesman Mark Plowden said.
Citizens for Responsibility and Ethics in Washington also filed a complaint Tuesday with the Federal Election Commission accusing Alvin Greene of failing to file appropriate campaign paperwork.
Greene stunned state party leaders June 8 when he defeated a former state lawmaker in the primary to face Republican U.S. Sen. Jim DeMint. Losing candidate Vic Rawl has filed a protest, saying there was a malfunction in last Tuesday's election.Meanwhile, a senior adviser to President Barack Obama says the Democratic nominee for the Senate in South Carolina doesn't appear to be a legitimate candidate.
South Carolina Democrats chose a political unknown, 32-year-old Alvin Greene, to run against Republican Senator Jim DeMint this fall.
Greene is an unemployed military veteran who hardly campaigned for the office, and his victory last Tuesday has raised questions about who backed his candidacy.
Obama adviser David Axelrod says South Carolina Democrats deserve a strong, credible candidate. He says it's a big mystery how Greene won.
Axelrod appeared Sunday on NBC's "Meet the Press."
Rely on the MidlandsConnect Politics Page for the latest in this race and others.
(The Associated Press and CNN contributed to this report)
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