And while the reports have been absolutely devastating, a heartwarming story has come to light.
Ariana's mother, Joan Grande was reportedly sitting in the front row at the concert.
Witnesses at the venue informed TMZ that the mother-of-two took several scared concertgoers backstage and waited with them until they were able to exit safely.
This amazing story of courage was released just as Ariana returned home to be with her fam and BF, Mac Miller.
Thoughts are with the victims and family members at this tragic time.