Singer Christina Grimmie, who had competed on the US TV programme The Voice, has died of her wounds after being shot in Florida, police say. They say a man opened fire on her when she was signing autographs after a concert in Orlando. The assailant - who was tackled by Ms Grimmie's brother - then shot and killed himself. The 22-year-old singer died in a local hospital. In 2014, Ms Grimmie finished third during season six of The Voice. In a tweet, Orlando's police wrote: "With deep regret, we have confirmed Christina Grimmie, @TheRealGrimmie has died from her injuries." Meanwhile, Ms Grimmie's publicist Heather Walsh said: "It is with a heavy heart that we can confirm that Christina has passed and went home to be with the Lord."