From Radar Online
"They were taken at the hospital," admitted the source, who has been shopping the photos to various other media outlets.
The possible release of the stills would almost certainly cause more outrage. Less graphic images were published online 11 days after the couple's fight nearly two years ago.
Three of the stills feature Rihanna, a fourth is of Chirs Brown seated in a hospital room pictured with a small lesion on his upper lip.
It was widely reported that the battered Umbrella singer became enraged after finding text messages on Brown's cell phone to other women, prompting her to throw the phone at Brown's face. The reports were never verified.
Rihanna - whose real name is Robyn Fenty - is pictured with large welts above each of her eyebrows, marks on both of her cheeks and a split lip.
The most graphic photo is a close-up; her left eye bloodied and bruised, with four lesions on her face and multiple cuts on her bottom lip.
Rihanna, wearing a grey tank top with her short hair pushed off her face, is also photographed in a profile position, showing the right side of her face.
A ruler is being held up which shows the reddish swelling to span two inches - from the bottom of her eye almost all the way down to her mouth.
In another image, Rihanna is shown pulling her busted lips apart to show numerous lacerations on the inside of her mouth.
A worker, wearing a latex glove, is holding up a ruler to her lips.
There appears to be at least five major cuts on the inside of her lips.
"(I'm) not sure if they where used as evidence, but I'm assuming they were," said the source.
In the one image not seen by RadarOnline.com, Rihanna is captured with a "bite bruised mark on her arm", according to the source.
