Twin teens Jasmiyah and Tasmiyah Whitehead, who were arrested in May for the killing of their mother, Jarmecca "Nikki" Whitehead, were indicted by a grand jury in Rockdale County Superior Court for malice murder, felony murder and aggravated assault.

The grand jury met on Monday and handed down an indictment of the charges, which means enough probable cause was found to continue the case to a trial by jury. The indictments were published Tuesday.

The twins' cases were assigned to the court of Judge Sidney Nation.

District Attorney Richard Read said the date of the arraignment has not been set. Nation normally hears arraignments on the first Thursday of the month.

The 16-year-olds were accused of stabbing and beating their mother, Nikki Whitehead, 34, to death in their gated Bridle Ridge sudivision home on January 13. They were arrested in May after test results and investigations "pointed clearly to who was responsible for the murder," according to Conyers Police Chief Gene Wilson. The twins had a stormy relationship with their mother and had recently been put back into Nikki's custody days before the killing.

A bond hearing for Jasmiyah Whitehead had been held in June and bond had been denied.