The FBI released its records regarding three investigations conducted by the agency on behalf of Whitney Houston. The files show the FBI investigated an alleged extortion attempt 1n 1992,but decided no crime had taken place. Agents also looked into possible criminal threats against Houston in fan mail sent to the FBI in 1988 and 1999,again no evidence of a threat was found. The 128 page file doesn't contain any new personal details of the late singer who was found dead on February 11th,2012.