Before You Exit releases heartbreaking statement about opener Christina Grimmie

'The Voice' alum Christina Grimmie shot, killed after her concert
'The Voice' alum Christina Grimmie shot, killed after her concert

One of the last tweets on Christina Grimmie's Twitter account says it all -- she was excited to perform on Friday night with pop rock band Before You Exit. Both artists took to Twitter asking fans to come out to their show at at the Plaza Live in Orlando, Florida. ​

But things quickly took a very tragic turn. During an autograph signing session after Before You Exit's show (for which Grimmie was the opening act), a man allegedly armed with two guns walked up and opened fire, fatally wounding the 22-year-old singer, according to police. Grimmie's brother reportedly jumped on the man, but it was too late.

Before You Exit shared a heartbreaking post on Twitter about the young, talented star who was more than just someone they worked with -- she was a friend.

"Christina was such a loving, caring, beautiful person with the biggest heart. She was an absolutely incredible musician and an even better friend," the band tweeted early Sunday morning about Grimmie, whom they called an "angel, sister and a beloved friend."

"We are so saddened by her passing and are completely heartbroken. Words fail to describe how much Christina means to all of us. She was always a constant beam of light and energy into the hearts of everyone around her," wrote the band. "Her care-free spirit and her laughter constantly lit up every room she entered and she always had this glisten in her eyes which was evident in her faith. While we know there is no sort of feeling that can replace the joy Christina brought into our lives, we know she is glistening from up in Heaven and shining down on all of us."

"Please join us in keeping Christina's family as we know Jesus said, 'In this world you will have trouble. But take heart! I have overcome the world.' She and her talent will be missed by us all," they continued.

PHOTOS: See Christina Grimmie on "The Voice"