What is the fine-grained topic of the following text: The agency was unequivocal in its finding: “To date, none of the more than 650 interviews completed, locations searched or evidence collected and analyzed have produced evidence that would support the existence of a scuffle, altercation or attack,” the FBI wrote in a news release. Only return the topic.
FBI's findings on a non-existent scuffle, altercation or attack.