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Twenty-two-year-old singer Christina Grimmie has died after being shot following a performance in Orlando on Friday, according to her publicist.

At a news conference late Friday, police officials said Grimmie was shot around 10:45 p.m. local time at The Plaza Live where she had performed with the band Before You Exit earlier that night.

With deep regret, we have confirmed Christina Grimmie, @TheRealGrimmie has died from her injuries. — Orlando Police (@OrlandoPolice) June 11, 2016

Police said the suspect shot Grimmie after her show, while merchandise was being sold and autographs written. Officials also said that Grimmie’s brother tackled the shooter who then shot himself.

WATCH: Fan video shows Christina Grimmie performing before fatal shooting

0:36 Fan video shows Christina Grimmie performing before fatal shooting Fan video shows Christina Grimmie performing before fatal shooting

Orlando police have identified Grimmie’s killer as 27-year-old Kevin James Loibl.

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Man who shot and killed Christina Grimmie @TheRealGrimmie is

Kevin James Loibl DOB 03/10/1989 pic.twitter.com/2D7ZIDhXCa — Orlando Police (@OrlandoPolice) June 11, 2016

He may have been a deranged fan, although the motive was still unknown.

READ MORE: Celebrity tributes pour in on Twitter, Instagram for Christina Grimmie

Sgt. Wanda Miglio said during a news conference after the shooting that about 60 to 100 people were in attendance, though only a handful remained when the shooting happened.

WATCH: Orlando police reveal details on Youtube sensation and top “Voice” contestant, Christina Grimmie’s death after she was shot and killed late last night, Friday. 2:20 Orlando police give details into the fatally shooting of singer Christina Grimmie Orlando police give details into the fatally shooting of singer Christina Grimmie

Miglio said she did not know what security was like at the venue, or how the shooter got two guns inside. She also said she did not know if off-duty officers were working the concert.