FILE - A man stands next to flowers for the victims of a bombing at St. Ann's Square in central Manchester, England, May 26, 2017. More than 250 survivors of the suicide bombing that killed 22 people at a 2017 Ariana Grande concert in Manchester, England, are taking legal action against Britain's domestic intelligence agency, lawyers said Sunday, April 14, 2024. (AP Photo/Emilio Morenatti, File)
FILE - Flower tributes are seen at St Ann's Square, Manchester, England, May 23, 2017, after a suicide bombing attack at an Ariana Grande concert at the Manchester Arena. More than 250 survivors of the suicide bombing that killed 22 people at a 2017 Ariana Grande concert in Manchester, England, are taking legal action against Britain's domestic intelligence agency, lawyers said Sunday, April 14, 2024. (AP Photo/Rui Vieira, File)
FILE - Ariana Grande appears at the 62nd annual Grammy Awards in Los Angeles, Jan. 26, 2020. More than 250 survivors of the suicide bombing that killed 22 people at a 2017 Ariana Grande concert in Manchester, England, are taking legal action against Britain's domestic intelligence agency, lawyers said Sunday, April 14, 2024. (Photo by Jordan Strauss/Invision/AP, File)