Lee was linked by DNA tests to the deaths of seven women in the Baton Rouge and Lafayette areas in Louisiana, and in 2004 was convicted, in separate trials, of the murders of Geralyn DeSoto and Charlotte Murray Pace. The Pace trial resulted in a death sentence.

Newspapers suggested Lee was responsible for other unsolved murders in the area, but the police lacked DNA evidence to prove these connections. After Lee's arrest, it was discovered that another serial killer, Sean Vincent Gillis, was operating in the Baton Rouge area during the same time as Lee. Lee died on January 21, 2016, of heart disease at a hospital in Louisiana, where he was transported for treatment from Louisiana State Penitentiary, in which he had been awaiting execution. Lee's methods varied with nearly each murder. Similarities between the crimes included the removal of cell phones from the victim's belongings, and a lack of any visible signs of forced entry into the location where the victim was attacked. Two of the victims' bodies were discovered at the Whiskey Bay boat launch, approximately 30 miles west of Baton Rouge, just off Interstate 10.Īs a result of an inaccurate FBI offender profile and erroneous eyewitness accounts, police originally believed the killer to be white. Police therefore administered thousands of DNA tests to Caucasian men in and around the general area of the murders. Having no leads, police then allowed the now defunct company DNAPrint Genomics to access DNA left at the crime scenes. DNAPrint Genomics generated an ancestry profile indicating that the suspect was 85% African, thus changing the course of the investigation.

Derek lee louisiana serial killer