UPDATED: Kehlani took to Twitter on Wednesday to mourn the death of 21-year-old rapper Lexii Alijai, with whom she collaborated on 2015’s “Jealous.”

“jus got the worst f–-in news ever. my heart is BROKE. F–-,” she tweeted.

She went on to say she’s “angry,” “confused” and “heartbroken,” calling Lexi Alijai — whose real name is Alexis Alijai Lynch — her “little sister.”

“i keep typing and backspacing,” Kehlani tweeted. “you knew what you meant to me. everyone knew what you meant. you were so special bro. i seen you fight thru it all i seen u thug it out lex. imma miss you so bad. you was about to get everything you always talked about.”

The circumstances of Lynch’s death are currently unclear. On Friday, Variety obtained a statement on Lynch’s death from 1AM Media, whose management company and record label, 1AM Entertainment, managed Lynch.

“Lexii was an extraordinary talent who left an indelible mark on the music industry in just a short period of time,” reads the statement. “She was a true lyricist and an exceptional storyteller with an authentic sound full of energy and curiosity. She had a deep love and devotion to music but more than anything, was a generous and kind soul, with an infectious spirit. Lexii was inspired by J. Cole and the time she spent with the many Dreamville artists and was enthusiastic about the future and eager to see the world. Her debut album ‘Come Back Soon’ was set to release this year.”

“The entire 1am family is heartbroken and deeply saddened by her passing,” the statement goes on. “Our deepest condolences to her friends, fans and everyone who was touched by her. Her family appreciates privacy during this difficult time.”

A vigil for Lynch will be held Friday at 6 p.m. at the Minneapolis American Indian Center.

Lynch, who was a St. Paul, Minn., native, gained prominence by rapping over songs like Bryson Tiller’s “Exchange,” Meek Mill’s “Cold Hearted” and Drake’s “Girls Love Beyonce.”

She also released original music, including several mixtapes, the first being “Super Sweet 16’s” in 2014. She would follow that up with 2014’s “feel-less” and 2015’s “Joseph’s Coat,” and debuted her first full-length project in 2017 with the 16-track “Growing Pains.” Her collaboration with Kehlani, “Jealous,” came on Kehlani’s 2015 mixtape “You Should Be Here,” which was nominated for best urban contemporary album at the Grammys.

In 2016, Lynch performed at the Soundset Festival in the Twin Cities, which also featured the likes of A$AP Rocky, Future, The Roots, Lizzo, Post Malone and Anderson .Paak.

In addition to Kehlani, a number of musicians paid tribute to Lynch on social media, including Wale, who wrote “Lexi … my god man …”

Rapper Bas tweeted, “This is hard to comprehend. So young, talented, humble, and gracious. I was positive it was only a matter of time before the world celebrated your talent and your character.”