A church in Birmingham is marking the anniversary of a deadly Ku Klux Klan bombing that killed four black girls in 1963.
The 16th Street Baptist Church planned to hold a service Monday to commemorate the 51st anniversary of the blast.
Bells will toll at 10:22 a.m., the approximate time the bomb went off on a Sunday morning at the church.
The blast killed four girls. It became an important symbol of the depth of racial hatred in the South during the civil rights era.
Four Ku Klux Klansmen were convicted in the bombing, and one remains in prison.
The city of Birmingham recalled the bombing with four days of events and festivals leading up to the anniversary.