According to a search warrant, obtained by TMZ, the man had been dogging Rihanna, sending her threatening tweets between April and June of last year, saying among other things,
"Should have killed @rihanna a minute back I would be good right now."
The man also said, "I use guns, bout to get a gun license."
But the search warrant makes it clear the man did things even more deranged, posting a 15 second masturbation video to Rihanna.