Christopher Collings, 49, was declared dead nine minutes after he was injected with a single dose of pentobarbital

Rowan Ford was a star student whose smile and work ethic won the hearts of her teachers. She loved riding her purple bicycle and her bedroom was Barbie pink.

Collings, a father of two now-grown daughters, was convicted of killing Rowan Ford on Nov. 3, 2007, in the small southwest Missouri town of Stella.

Collings is set to die by lethal injection for the murder of 9-year-old Rowan Ford in the tiny southwestern Missouri village of Stella on Nov. 3, 2007.

A Missouri man is facing scheduled execution Tuesday evening for the sexual assault and killing of a 9-year-old girl whose body was dumped in a sinkhole

The state of Missouri executed Christopher Collings, 49, on Tuesday, for the 2007 sexual assault and killing of 9-year-old Rowan Ford.

The body of 9-year-old Rowan Ford was found in a sinkhole near Powell, Mo. in November 2007 Christopher Collings, a Missouri death row inmate convicted of sexually assaulting and killing a 9-year-old girl,

Christopher Collings, 49, is set to receive a single injection of the sedative pentobarbital at 6 p.m. CST for the 2007 murder of fourth-grader Rowan Ford, who was dumped in a sinkhole.