Generate a correct and concise answer for the question based on the words in the context.

Context : Desmond Keith Carter (October 15, 1967 -- December 10, 2002) was convicted of the 1992 murder of Helen Purdy and executed in 2002 by the State of North Carolina at the Central Prison in Raleigh.
Question : Which crime Desmond Keith Carter is considered to have commited?
murder