Abandoned flip flops lie on the blood soaked ground, at the site of an explosion at a bus park in Abuja, Nigeria, Monday, April. 14, 2014. Suspected Islamic militants struck at the heart of Nigeria with a massive rush-hour explosion at a bus station Monday that killed 71, with the toll expected to rise in the deadliest attack yet on the nation's capital. Survivors screamed in anguish and the stench of burning fuel and flesh hung over the site where billows of black smoke rose as firefighters worked to put out the fires (AP Photo/ Sunday Alamba), APTOPIX