At least 19 people are confirmed dead in an explosion following Ariana Grande's concert in Manchester, England. Musicians and celebrities have expressed their sympathy on Twitter, praying for the victims and sending their thoughts and love to the people who survived.
The Greater Manchester Police is treating this "as a terrorist incident" until they know otherwise.
Ariana Grande has also expressed her thoughts on Twitter.
Our thoughts go out to victims and we hope that the survivors and the people in the area find their way home safely.