Tags: Murder

A teen who pleaded guilty to beating an elderly disabled man to death says she and her friends brutally assaulted the victim because they were "bored."

The execution of Robert Roberson, 57, is slated for Thursday evening after having spent 20 years on condemned row for the capital murder of his 2-year-old daughter Nikki Curtis in Palestine, Texas in 2002.

'I would like the public to know that I'm innocent,' Roberson said.