Christina Grimmie's brother remembers his sister in touching Facebook post

Christina Grimmie's brother Marcus, who tackled the gunman who fatally shotthe singer on Friday night, has paid tribute to his sister on Facebook. 

"Christina was more than my sister. She was a partner in life. A superstar. A goofball. Introverted. And a friend to everyone. Genuinely," wrote Grimmie. "But above all...she was my baby sister."

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Grimmie shared photos of his sister and encouraged others to do the same and comment with their favorite memories of Christina. 

Marcus, who is also a musician, was with his sister when the gunman, Kevin James Loibl, opened fire while she was signing autographs after her concert. Marcus tackled Loibl, who shot and killed himself in the struggle.

"[It is] unknown what his plans were for after killing Christina, but very heroic actions by Marcus to jump in, and definitely could have prevented further loss of life," said Orlando Police Chief John Mina during a press conference on Saturday. 

Read his full status update below.

By now I'm sure many you have heard that Christina has passed away due to gunfire after a show. I really don't have much to say about anything and am just blown away with the prayers and support. I PROMISE I will respond to everyone when I can.

Christina was more than my sister. She was a partner in life. A superstar. A goofball. Introverted. And a friend to everyone. Genuinely. But above all...she was my baby sister. She loved the Lord and her family and was always there for me and I honestly don't know what ill do without her.

But please, if you are reading this far, I would love all and any of you to post pics of you and her and/or memories you have of her down in the comments. I will cherish it forever and always. So please do that for me. Thank you all so so much. The support has been crazy and I do feel a peace. I just don't have any words. I love you all.