'Stalker Sends Rihanna Graphic Sexual Video'

A man who has been allegedly stalking Rihanna also reportedly sent the pop star a graphic video.

Police began investigated the man, who went by the names Ralph Alexander and Alec Mercer on Twitter, after he posted a death threat and took a selfie outside the singer's Los Angeles home in April.

And a search warrant shows the police discovered the alleged stalker also sent the 27-year-old singer the 15-minute video, TMZ reports.