Singer Rihanna's alleged stalker is now being tracked down by the police by all means necessary. This comes after the man, alternatively identified as Alex Mercer and Ralph Alexander on Yahoo, posted a selfie outside the singer's former home on April 30.

He then tweeted the next day: "Should of killed @rihanna a minute back I would be good right now. Sorcery is a weapon I use guns, bout to get a gun license, can't use my hands," according to Gossip Cop.

Police went to Rihanna's house, but the stalker was nowhere to be found once they arrived. The authorities are currently tracking down his phone, computer and social media records, according to TMZ.

While the police are on a manhunt for the stalker currently on the loose, the 26-year-old singer was recently spotted in New York on Monday night wearing a calf-length green floral dress, looking comfortable and upbeat as she went inside a tattoo parlor, according to the Daily Mail.