According to new search warrants issued Thursday, Peter Moses and Vania Sisk were asked to submit DNA to investigators. They both submitted hair, saliva and fingerprints.
Durham police arrested Moses and Sisk Tuesday night in a raid. Neither has been charged in connection with the disappearances of 4-year-old Jadon Higganbothan and 28-year-old Antoinetta McKoy.
Sisk is Higganbothan's mother.
An informant claims Moses and Sisk were involved in the murders of Higganbothan and McKoy, but no bodies have been found.
Moses is believed to be the leader of the Black Hebrew Israelites cult.