Singer Christina Grimmie, who starred in NBC's "The Voice," died early Saturday after a gunman shot her following a performance in Florida, authorities said.

A man armed with two guns walked up to the singer as she was signing autographs late Friday night and opened fire, Orlando Police spokeswoman Wanda Ford said.

The gunman fatally shot himself after Grimmie's brother tackled him, according to authorities.

The singer had performed at The Plaza Live theater Friday night, along with the band Before You Exit, when the shooting broke out. She was rushed to a hospital in critical condition and died a few hours later.

"It is with a heavy heart that we can confirm that Christina has passed and went home to be with the Lord," her publicist Heather Weiss said in a statement.

"She was shot at her show in Orlando and, unfortunately, didn't survive the gunshot wounds. We ask at this time that you respect the privacy of her family and friends in their time of mourning."

(CNN)