Nicki Minaj is mourning the loss of one of her employees, while another is fighting for his life in a Philadelphia hospital.

On Wednesday afternoon (Feb. 18), the YMCMB rapper shared the upsetting news in a tweet.

CBS Philadelphia reports that local detectives are still investigating the violent incident, which happened around 3 a.m. on Wednesday morning in the city's West Oak Lane neighborhood, near the intersections of Johnson Street and Stenton Avenue.

Two members of my team were stabbed last night in Philly. One was killed. They had only been there for two days rehearsing for the tour.

— NICKI MINAJ (@NICKIMINAJ) February 18, 2015

One victim is confirmed to be dead, while another is critical condition, and hospitalized at Albert Einstein Medical Center.

Police have not listed a motive for the assault, but according to NBC Philadelphia, an argument that began inside Che Bar & Grill spilled out into the streets, where the stabbing took place. The victims were 29- and 27-years-old, and the suspect was last seen leaving the scene in a gray Buick LeSabre.

Nicki shared a photo of the two men on Instagram, writing, "these guys flew into Philly for my tour rehearsals 2 days ago and were both stabbed last night. #RIPDAYDAY condolences to your family. Unbelievable. Eric (on the right) is recovering. Another senseless act of violence that took the life of a great guy. So sad."

Fabolous also knew the two men very well. He was the first to share the above photo that Nicki Minaj reposted, along with a heartbroken message.

"My heart is heavy right now... God opened my eyes this morning at 9:49am," Fab wrote on Wednesday. "For some reason at that time I woke up thinking about both of these guys. They both work with me, but I couldn't figure out why they were in my mind at 1st wake up. Wasn't sure if I had a dream & they were in it or just some wake up & process things type sh--.."

"But at 10:04 my brother hit me & told me that they both were fatally stabbed in Philly last night. My friend @daydaydoesdis (left) died & my friend Eric Parker is in critical condition in the hospital fighting for his life. I am still in shock & don't want to believe this. And it hurts even more knowing how good these two dudes are. How hard these guys work. And how loyal they are to whoever they are down with & each other. Please send Eric Parker your blessings & a prayer for him to pull thru."

"And RIP to the fallen soldier Day Day. I can't even believe I'm saying that with your name attached to it. & I HATE this being a post!! I will miss your energy, your vibe, & you but I'll hold on to your spirit!! #RIPDayDay."