The former Democratic nominee for Florida governor was indicted in a criminal case stemming from his time as Tallahassee mayor and statewide candidate.

MIAMI — Andrew Gillum, the Democrat who lost the 2018 Florida governor’s race to Ron DeSantis, surrendered to federal authorities in Tallahassee on Wednesday after he and a close associate were charged with conspiracy and 19 counts of fraud over how they raised and used funds when he was mayor of Tallahassee and a candidate for governor.

The charges appear to stem from a federal investigation into Tallahassee City Hall that began in 2015 and involved undercover F.B.I.

Gillum had socialized with the undercover agents in New York, where they took a boat ride to the Statue of Liberty and saw the hit Broadway musical “Hamilton,” were an issue in the 2018 campaign.

According to the indictment, she used her communications company to disguise fraudulent payments to Mr.

“There’s been a target on my back ever since I was the mayor of Tallahassee.

Gillum is related to his interactions with the undercover agents.

Gillum and two unnamed associates solicited campaign contributions from the undercover agents for Mr.

Lettman-Hicks’s company, P&P Communications.

Gillum told one of the undercover agents that he “should separate in his mind the campaign contributions and the Tallahassee projects,” the indictment says, adding that Mr.

Gillum also “indicated he looked favorably on” the undercover agent’s proposed development projects.

agents in 2017, he “falsely represented” that the undercover agents posing as developers never offered him anything and that he had stopped communicating with them after they tried to link their contributions to support for potential Tallahassee projects.

Gillum resigned from his position with People for the American Way, a liberal advocacy group whose Tallahassee office was leased from Ms.

Gillum was also paid about $70,500 a year as mayor, a position he held from 2014 to 2018.

Gillum then became an employee of P&P Communications, where he was given a monthly salary of $10,000.

Gillum was “only a cover used to provide him funds that he lost” after his resignation from People for the American Way.

Lettman-Hicks solicited $50,000 in grant funding from two unnamed organizations, the money was intended to be used for the Campaign to Defend Local Solutions, an effort by Mr.

Instead, according to the indictment, that money ultimately went to P&P Communications to pay Mr.

Instead, $60,000 went to P&P Communications and was used in part to pay Mr