Selena Gomez used the Miami stage of her "Revival" World Tour to pay tribute to slain friend and protégé Christina Grimmie.

The 22-year-old "The Voice" star was gunned down on the night of June 10, 2016 as she opened for the pop-rock band Before You Exit at the Plaza Live in Orlando.

Authorities have since charged 27-year-old Kevin James Loibl as the shooter.

"When she was 14, we met her and my parents and I signed her," a clearly shaken Gomez recalled. "One thing about Christina and her family is that she holds her faith so closely to her. And I think it's not about a religion and it's not about anything or good deeds. It's just that she had faith, and I don't really understand how this really happened, but I would like to dedicate this next song to her."

Wiping away tears, Gomez then poured her heart into rendition of Hillsong Worship's "Transfiguration." while sitting at the piano. A few lyrics in, Gomez was overcome by emotion and could be seen mouthing the words "I'm sorry" to her fans as she struggled to finish the song.

Earlier in the day, Gomez took to Twitter to post a classic black-and-white photo of the two she captioned, "My heart is absolutely broken. I miss you Christina."

Meanwhile, authorities revealed it seems Grimmie had no personal connection with her attacker, whom investigators now believe traveled more than 100 miles from his St. Petersburg home to come face to face with her.

Grimmie was shot as she signed autographs and Loibl quickly turned the gun on himself as he was being tackled by his victim's brother. Grimmie died several hours later early Saturday.

"She was doing a meet-and-greet, just signing autographs and selling merchandise," said Orlando police chief John Mina. This white male approached her and opened fire, striking her. There is no indication that he knew her. We're looking into that to try to find a motive for the crime."

Detectives were also searching Loibl's cellphone and social media accounts to see if it might offer any clues as to what his motive may have been. While unarmed guards checked bags and purses for contraband, there were no metal detectors or pat-downs of arriving concert goers.

Related