Four months after the Birmingham campaign settlement, someone bombed the house of NAACP attorney Arthur Shores, injuring his wife in the attack. On September 15, 1963, Birmingham again earned international attention when Ku Klux Klan members bombed the 16th Street Baptist Church on a Sunday morning and killed four young girls. FBI informant Gary Thomas Rowe was hired to infiltrate the KKK and monitor their activities and plans. Rowe was involved, along with the Birmingham Police, with the KKK attacks on the Freedom Riders, led by Fred Shuttlesworth, in Anniston, Alabama on May 14, 1961. In addition, Rowe and several other Klansmen also partook in the killing of Civil Rights activist Viola Liuzzo on March 25, 1965, in Lowndes County, Georgia after the Selma to Montgomery march.