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.

Christopher Collings was sentenced to death for the rape and murder of Rowan Ford in Stella, Missouri, in November 2007

The sexual assault and murder of Rowan Ford in 2007 rocked the southwestern town of Stella, Missouri. On Tuesday, the man convicted of the crimes against the 9-year-old girl was executed.

Christopher Leroy Collings, 49, is set to die by lethal injection for the murder of 9-year-old Rowan Ford in the southwestern Missouri village of Stella.

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 death row inmate Christopher Collings by lethal injection Tuesday evening for the 2007 abduction, rape and murder of a 9-year-old girl.

Missouri executed death row inmate Christopher Collings on Tuesday for the 2007 rape and murder of Rowan Ford.

Missouri carried out its fourth execution this year on Tuesday night. The man condemned to death was convicted in a 9-year-old girl's 2007 murder.

Missouri executes a man for sexually assaulting and strangling a 9-year-old girl in 2007.