WUSA 9 Staff

GERMANTOWN, Md. (WUSA9) -- A mother killed two of her own children while performing an exorcism in Germantown, Md., police said.

Montgomery County police have charged two women for murder in the Friday deaths of a 1-year-old boy and 2-year-old girl.

Zakieya Latrice Avery, the mother of the children is charged with two counts of first-degree murder for the killings, and two counts of attempted first-degree murder, as two other children remain hospitalized after Friday's attack. Avery, 28, of the 19000 block of Cherry Bend Drive in Germantown, is being held without bond.

Monifa Denise Sanford, 21, who was also at the scene, has been released from the hospital and has been charged with two counts of first-degree murder for the deaths of the two kids and two counts of attempted murder for two children who are still in the hospital. She is also being held without bond.

Police identified the deceased children as Norell N. Harris, a 1-year-old male, and Zyana Z. Harris, a 2-year-old female.

The hospitalized children are identified as Taniya Harris, a 5-year-old female, and Martello Harris, a 8-year-old male.

People have laid down flowers, candles, and teddy bears in front of the home where the two children were killed and the two others were injured. A vigil was held Saturday night to remember the small children who were stabbed to death.

"It's kind of horrifying for any father, any grandfather," State's Attorney John McCarthy said Friday. "These are hard cases," he said, his voice breaking.

There has been no update on the condition of Taniya or Martello.