Angela Weiss/Getty Images for The Humane Society Of The United State

Christina Grimmie, the singer-songwriter best known for competing on The Voice, has died at the age of 22 after she was shot following a concert in Orlando. Her death was confirmed by her publicist (via CNN) on Saturday morning.

According to USA Today, Grimmie was signing autographs following a performance at the Plaza Live Theater when a man approached the singer and shot her. Grimmie’s brother tackled the assailant, who then killed himself.

Grimmie was immediately taken to Orlando Regional Medical Center. No one else was reported injured in the incident; Orlando Sgt. Wanda Miglio called Grimmie’s brother a hero for tackling the shooter.

The suspect has not been identified, and it is not clear whether or not he personally knew Grimmie. He reportedly had two guns in his possession.

Grimmie began her career as a teenager with an array of YouTube covers, earning millions of views with renditions of Justin BieberMiley Cyrus and Rihanna songs. The New Jersey native finished in third place on Season 6 of The Voice in 2014. 

The singer had been working on new music to follow up her Side A EP from earlier this year. Grimmie had opened for Rachel Platten on her Wildfire tour recently, and was headlining the show on Friday night.