JACKSONVILLE, Fla. — Florida Attorney General James Uthmeier’s office has served the Jacksonville Transportation Authority with a third subpoena in its investigation of the agency’s financial crisis, seeking a broad range of business records and communications involving Mayor Donna Deegan. The subpoena, issued Oct. 13, requests texts and emails exchanged among Deegan, former JTA CEO Nat Ford and interim CEO Cleveland Ferguson. It also seeks JTA contracts with WSP, a consulting company. WSP had $1.6 million in contracts with the authority, as well as sponsorship agreements with more than two dozen organizations, including the Donna Foundation, the Jacksonville Jaguars and the University of North Florida. Ford’s wife, Janet Walker Ford, is a senior vice president at WSP. The disclosed details do not establish that the contracts or sponsorships involved improper conduct. The new demand follows two earlier subpoenas in the state investigation. One sought vendor contracts; another sought notes from a meeting between Deegan and former JTA board member Megan Hayward. Those notes indicated that possible cost problems with the authority’s U2C autonomous-vehicle program had been discussed. The mayor’s office responded by emphasizing the authority’s governance structure, saying JTA is a regional state transportation agency whose board is composed mostly of members appointed by the governor. Its budget is reviewed and approved by the Jacksonville City Council, the office said. JTA said it would provide information requested during the investigation and remains committed to transparency and accountability. The investigation’s records demands put the authority’s finances and oversight under continued scrutiny. JTA’s transportation programs and spending affect residents across the region, while its state-appointed board and city-reviewed budget give multiple levels of government a role in its oversight.