ALBUQUERQUE, N.M. (AP) — Federal agents have obtained the DNA of a suspected drug dealer as part of an investigation into in the death of a 10-year-old Albuquerque girl who was raped and dismembered in her home.

The Albuquerque Journal reports court and police records show the FBI set up an undercover narcotics investigation six weeks ago with the goal of getting additional evidence in the slaying of Victoria Martens.

It's part of a renewed focus by investigators on whether a fourth adult was present around the time the girl was killed.

Investigators also want to know what role methamphetamine might have played in the child's death.

Michelle Martens, the girl's mother, her boyfriend Fabian Gonzales and his cousin, Jessica Kelley, have been charged in the August 2016 death. They have pleaded not guilty.

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Information from: Albuquerque Journal, http://www.abqjournal.com