Brian Laundrie, the man sought as a person of interest in the disappearance and death of his fiance, died via a self-inflicted gunshot wound, according to the Laundrie family in a statement issued by their attorney. The partial remains of Laundrie were located in a wildlife preserve in Florida on Oct. 20 after weeks of searching. And about a month before that, his fiancee, Gabby Petito, was found dead in a remote area in Wyoming as officials were searching for Laundrie. “Chris and Roberta Laundrie have been informed the cause of death was a gunshot wound to the head and the manner of death was suicide,” lawyer Steven Bertolino told journalist Brian Entin in a statement on Tuesday, citing the results of an autopsy. “Chris and Roberta are still mourning the loss of their son and are hopeful that these findings bring closure to both families.” A federal arrest warrant …