Benjamin Cole, convicted of killing his 9-month-old daughter Brianna Cole, executed in Oklahoma

Oklahoma executed inmate Benjamin Cole on Thursday morning despite claims from his attorneys that he had been severely mentally ill.

Cole was pronounced dead at 10:22 a.m. at Oklahoma's state penitentiary in McAlester. He was the sixth Oklahoma inmate to be executed since the state resumed carrying them out in October 2021.

Attorneys for Cole did not dispute that he killed his infant daughter, 9-month-old Brianna Cole, by forcibly bending her backward, breaking her spine and tearing her aorta. But they argued that Cole was severely mentally ill and that he had a growing lesion on his brain that had worsened in recent years.