However, he was so tired that he fell asleep at home after stopping there for clothes. The motel bomb could be heard all over town. It interrupted the singing of children in the juvenile detention center, most of whom had been arrested during the civil rights demonstrations. Next, the children heard the sound of white men repeatedly singing "Dixie" over the jail's loudspeakers. Bryan McFall of the FBI was expecting his KKK informant Gary Rowe to report at 10:30 PM, immediately after the end of the KKK rally. McFall searched in vain for Rowe until finding him at 3:00 AM in the VFW Hall near the Gaston Motel. Rowe told McFall, his FBI handler, that Black Muslims had perpetrated a false flag bombing in order to blame the Klan. McFall was unconvinced. However, in submitting his final report to J. Edgar Hoover, head of the FBI, McFall did not identify the KKK as potentially responsible for the bombing, nor did he question the credibility of Rowe as an informant. Contemporary historians widely believe that the bombing was carried out by four KKK members, including Gary Rowe and known bomber Bill Holt. Rowe was already suspected by the KKK to be a government informant, and other members may have compelled him to assist with the bombing in order to test his fidelity to the white supremacy cause. Many black witnesses held police accountable for the bombing of the King house, and immediately began to express their anger. Some began to sing "We Shall Overcome," while others began to throw rocks and other small objects. More people mobilized after the second blast. As it was Saturday night, many had been celebrating the agreement that had been reached and had been drinking. Many of them were already frustrated with the strategy of nonviolence as espoused by Martin Luther King and his Southern Christian Leadership Conference and turned to violence. Three black men knifed white police officer J. N. Spivey in the ribs. Several reporters who had been drinking at the bar got into a shared rental car and headed toward the commotion. A crowd of about 2,500 people had formed and was blocking police cars and fire trucks from the Gaston Motel area. A fire that started at an Italian grocery store spread to the whole block. As traffic started to move, Birmingham Police drove their six-wheeled armored vehicle down the street, spraying tear gas. An unexplained U.S. Army tank also appeared. At 2:30 AM, a large battalion of state troopers, commanded by Al Lingo and armed with submachine guns, arrived on the scene.