FILE - This June 18, 2015, file photo, provided by the Charleston County Sheriff's Office shows Dylann Roof. A South Carolina prosecutor said Thursday, Sept. 3, 2015, that she will seek the death penalty for Roof, who is charged with killing nine black churchgoers in Charleston. Roof also faces federal charges including hate crimes. Prosecutors in that case have not said if they will pursue the death penalty. (Charleston County Sheriff's Office via AP, File)

Dylann Roof to appeal death sentence

A white supremacist sentenced to death for killing nine worshippers in a racist attack at a Charleston church has petitioned an appeals cour…