OKLAHOMA CITY (AP) - An Oklahoma City attorney is renewing his challenge of a state law that makes it more difficult for residents to sue to stop alleged government wrongdoing.

Attorney Jerry Fent filed the lawsuit Tuesday in Oklahoma County District Court after the state Supreme Court previously refused to hear the case.

The law signed last year by Gov. May Fallin changes the required signatures for so-called "qui tam" lawsuits from 10 taxpayers to 100 registered voters. The lawsuits are those filed by citizens in an effort to stop a questionable government action.

Fent says the bill is unconstitutional and makes it more difficult to expose government corruption.

Republican author Sen. Rob Johnson has said the intent of the bill is to keep a small group of disgruntled citizens from delaying government projects.