A Maryland mother is being charged with two counts of first-degree murder and two counts of attempted first-degree murder after fatally stabbing two of her children and wounding two more. 

Zakieya L. Avery, 28, (pictured) and one other woman whose relation to the family were performing an exorcism when the children, ages 1 through 8, were injured. 

“Investigators have learned that the two defendants believed that they were performing an exorcism. The investigation into this motive and other aspects of the crime continue at this point,” police said.

Source: WGN