(KCEN) -- A man a woman have pled guilty to a gruesome crime in Limestone County.
Katherine Griffith and Charles Griffith were arrested in September of last year and charged with killing Pamela Lykins and Jeff Summers of Mart.
Their bodies were found September 11 of last year in a ditch near FM 342 and County Road 318 outside of Mart.
Both were stabbed to death.
Charles Griffith was arrested in Grand Prairie the day after the discovery.
He apparently went with the couple to a local racetrack the night before they were found dead.
There is no word yet on a motive.