The FBI on Thursday issued an arrest warrant for Brian Laundrie, who was named earlier as a person of interest in the disappearance and death of his fiancé, Gabby Petito, in Wyoming. Authorities have been searching for Laundrie, who hasn’t yet been found, in a swampy wilderness area in Sarasota County, Florida. The body of Petito was found on Sunday in a national park area in Wyoming. Weeks before that, Laundrie returned to his home in Florida without Petitio after the two went on a cross-country road trip, and officials said that he was not cooperative with their investigation. A coroner’s office confirmed that the body was Petito’s and her manner of death was homicide. The FBI Denver office confirmed in a statement Thursday that it issued a warrant for Laundrie’s arrest as officials continue to investigate the “circumstances of Petito’s homicide,” urging anyone with knowledge of his whereabouts or know …