(CNN) - The Attorney General of South Carolina has no plans to investigate Alvin Greene's shocking win in last Tuesday's Democratic Senate primary.
"No one has provided this office with any credible allegation or information suggesting criminal wrongdoing," said Mark Plowden, a spokesman for Attorney General Henry McMaster, a Republican.
The Attorney General's office was responding Tuesday to a request from the watchdog group Citizens for Responsibility and Ethics in Washington, which asked McMaster to investigate rumors that someone induced Greene to run for Senate.
Greene is unemployed but somehow came up with a $10,440 check to get on the Democratic ballot. He then baffled political observers by defeating Charleston City Councilman Vic Rawl despite having no semblance of a campaign.
Rawl has filed a formal protest with the state Democratic Party claiming voting irregularities. Members of the party's executive committee will hear his challenge on Thursday.
If he remains in the race, Greene will face Sen. Jim DeMint and his $3.5 million campaign war chest in November.
Plowden pointed out that SLED, the South Carolina Law Enforcement Division, is the state's investigative authority and said that information about possible criminal activity would be referred to the agency.