Warren de Brueys, whose role as an FBI agent investigating the assassination of President John F. Kennedy became fodder for conspiracy theorists and who later directed the Metropolitan Crime Commission in New Orleans for a decade, died Saturday in Mandeville. He was 92.

His two children said he died of congestive heart failure and complications from Parkinson’s disease.

A New Orleans native who lived in Covington for 20 years before his death, de Brueys attended Warren Easton High School before being plucked during World War II by an FBI that needed people who could speak Spanish, said his daughter Denise de Brueys.

He served undercover for the FBI in Mexico City. He worked assignments in Latin America and met his wife, Mary Louise Henderson de Brueys, who died in 2009.

“They put him down there as sort of a ‘turista’ who could ferret out whatever he could about any of the Nazis who had been sent to Mexico or Central America, South America,” said his son Jim de Brueys.

After that, de Brueys enlisted in the Navy and was stationed in Hawaii, where he worked on a radio intelligence team cracking Japanese codes.

After the war, he attended Tulane Law School, earning his law degree in 1950 before returning to the FBI, where he became a special agent, moving among several posts, including New Orleans.

Among his assignments while in New Orleans, he was sent to Dallas following Kennedy’s assassination on Nov. 22, 1963, charged with compiling a hefty early report on the investigation.

Conspiracy theorists would later try to link de Brueys to a variety of characters, including alleged assassin Lee Harvey Oswald, through the work that the FBI’s New Orleans office had done to root out information on pro- and anti-Cuban groups.

De Brueys bristled at the suggestions, and he later phoned FBI Director J. Edgar Hoover. By then, de Brueys was the FBI’s special-agent-in-charge in Puerto Rico.

“He was linked with everybody. He was incredibly frustrated,” Jim de Brueys said of the conspiracy talk.

“He was getting frustrated with some of the things being said, and his name being brought up in a conspiracy kind of venue,” the son said. “He called Mr. Hoover and said, ‘I’m sorry, I’m going to testify’ (before Congress). He brought tons of documentation with him. He was very familiar with the case.”

Fluent in Spanish, Portuguese and French, de Brueys would later serve stints in Buenos Aires, Argentina, and Rio de Janeiro and Brasilia, Brazil, among other posts.

“He lived and did things that a lot of us would only do in our fantasies and our mind,” Denise de Brueys said. “He just went out and did them.”

De Brueys retired from the FBI in 1977 and turned to civic work, joining the crime commission as its second managing director in 1979, succeeding Aaron Kohn.

He served for 10 years, with an early focus on the state’s impending foray into legalized gambling. De Brueys, a devout Presbyterian, advocated against it, concerned over the specter of organized crime.

“He was educating the Legislature, policy makers, in the problems with legalized gambling. The public was being sold that we would be an alternative to Las Vegas or Atlantic City,” said commission President Rafael Goyeneche, who was hired by de Brueys and later succeeded him.

“At that time, there had been no major city in the country that had adopted any form of legalized gambling. He felt that would create problems, and he was very prophetic with that.”

Goyeneche described de Brueys as “a prince of a man,” who was passionate about public safety and criminal justice.

“Honesty, integrity — those were the words he actually lived by,” Goyeneche said. “He didn’t just recite them.”

Among his other roles, de Brueys served on the Governor’s Commission on Criminal Justice, the Governor’s Task Force on Drug Enforcement and the New Orleans Mayor’s Citizens’ Commission Against Crime.

He also enjoyed spending time with his family, Denise de Brueys said.

“My father loved to take us to Fort Walton Beach for vacations. We would just hang out at the beach, go fishing, maybe go trolling in a boat,” she said. “He liked to host a party and get all the long-lost relatives together who never had a chance to see each other.”

De Brueys lived at Heritage Manor nursing home in Mandeville at the end of his life.

Besides his two children, survivors include four grandchildren and three great-grandchildren.

A funeral is scheduled for 11 a.m. Monday at New Covenant Presbyterian Church, 4375 La. 22, in Mandeville. Visitation will begin at 9 a.m. Burial with military honors will be at 2 p.m. at Pinecrest Memorial Gardens in Covington.