Chris Brown took to Instagram to pay his respects to “Hit The Floor” star Stephanie Moseley after she was apparently murdered by husband Earl Hayes, who then shot himself. Moseley, 30, was a backup dancer for the “Run It” singer.

“RIP baby girl. Danced with me on tour and was always the coolest person,” Brown wrote. “My prayers go out to you and HAZE family.” The post appears to have been deleted on his page, but MTV U.K. and have screenshots of the message.

TMZ said in an exclusive report Tuesday that boxer Floyd Mayweather may be a witness to the crime. He reportedly urged rapper Earl Hayes to dump his wife before he allegedly shot her multiple times at their Los Angeles home early Monday morning, TMZ wrote. The apparent murder-suicide was fueled by the suspicion that Hayes suspected Moseley of having multiple affairs, one of them with Trey Songz. Mayweather said Hayes looked “weak” for not leaving his wife, the news site claimed.

Neighbors near the Los Angeles apartment heard the gunfire and alerted the LAPD. When officers arrived, they heard one final blow, and that was apparently Hayes committing suicide. Since Floyd is a potential witness to the crime, the police department wants to interview him, TMZ said.

He and Hayes were purportedly on a FaceTime call when the rapper decided he would shoot his wife. When the boxer realized the “Hit The Floor” star was in the apartment with Hayes, he allegedly pleaded with him not to shoot her, TMZ said. But his protests were not heard. The rapper allegedly went into the bathroom, where Moseley was taking a bath, and fired up to 12 shots.

Mayweather was apparently left speechless by Hayes’ death. Instead of writing a message of his own, he reposted a cryptic Instagram message by 50 Cent on Instagram and Twitter. “RIP Hayes,” 50 Cent originally wrote Monday. Then he included his friend in the message.

“@floydmayweather you are my little brother. All I can think about it what you said to me upstairs. Don’t you ever do nothing to yourself no matter what champ,” the "In Da Club" rapper continued. “We can fall out and fight or whatever, I don’t want to see you go out like that.” There was no mention of Moseley. The post quickly garnered the attention of Mayweather’s 4.5 million Instagram followers, with more than 106,000 people liking the image. The ambiguous caption prompted nearly 5,000 comments.

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