Florida's lieutenant governor resigned and nearly 60 other people were charged in a widening scandal of a purported veterans charity that authorities said Wednesday was a $300 million front for illegal gambling. 

Lt. Gov. Jennifer Carroll's resignation came a day after she was questioned in the investigation. Her public relations firm did work for the St. Augustine-based charity Allied Veterans of the World, but she has not been accused of wrongdoing. 

Authorities said the probe involved 57 arrest warrants and 54 search warrants issued at gambling operations in 23 Florida counties and five other states: South Carolina, Georgia, Alabama, Nevada and Pennsylvania.