Christina Grimmie's Brother Pens Tribute to the Late Singer

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"She was a partner in life."

The Voice alum Christina Grimmie's brother Marcus (Mark) posted a tribute to his sister on Saturday, a day after she was fatally shot after her concert in Florida. 

Grimmie posted his thoughts on his Facebook account on Saturday, as well as five new photos of Christina. 

"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," he wrote. "I will cherish it forever and always. So please do that for me."

He also penned a tribute to his late sister on his Facebook page, saying, "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."

Christina Grimmie was shot after a concert Friday night. She was 22. After her performance at the Orlando, Florida venue with the band Before You Exit, a man the Orlando Police Department identified as 27-year-old Kevin James Loibl approached the singer and shot her. 

Grimmie's brother tackled the gunman, who then shot and killed himself during the struggle, police said. They credited the singer's brother with preventing the gunman from hurting others.

Grimmie competed on season six of The Voice, coming in third place on Adam Levine's team. She amassed a following on YouTube as a teenager, gripping online fans with renditions of hit songs like Miley Cyrus' "Wrecking Ball." Her videos on YouTube have garnered millions of views.