GERMANTOWN, Md. (WUSA9) -- Montgomery County police released the 911 calls received about the children who were stabbed to death in their Germantown home, allegedly by their own mother and friend.

Those two women, Zakieya Avery, the mother of the children, and Monifa Sanford, are both in custody facing murder and attempted murder charges. Police say they believed they were performing an exorcism.

Monday evening, those 911 calls were released. Although there are still many unanswered questions, we are learning more about what happened leading up to those crimes.

The first 911 call came in Thursday night at about 10:15 from a neighbor on Cherry Bend, the night before police say the children were killed. The first caller was reporting an unattended baby in a car.

Caller: "I have a baby in the car that's been here for 45 minutes."

During the 911 call, the man went on to say two women were coming after him.

The caller says, "Back up off me, ma'am. That is my business, a kid in the car for an hour that is my business."

The 911 dispatcher gets the important information, but stays on the phone with the caller, who says the woman was "talking to herself."

Police say that night they did respond to the home, but when they got there the women and children were already inside. Police say they reported the incident to Child Protective Services who were set to return to check on the children Friday morning, which would end up being too late.

The second 911 call came in at 9:23 Friday morning from another neighbor concerned about a knife she saw in a car with blood on it.

Caller: "In the car outside there is a knife with blood. The car has the door open, the house has windows open up there. I heard loud noises in the night, I just woke up. I heard, like, jumping. I didn't know, they have 4 children, so I don't know if the kids are just doing that every day.

"So I didn't know. I just didn't think anything. I took my kids to school and I saw the knife with blood outside, I see the car with the door open, I see the windows open. I don't know if something happened there. The knife is still there."

ID=4674173Later police would make the gruesome discovery, two children, a 1-year-old and a 2-year-old both dead and a 5-year-old and a 8-year-old suffering from stab wounds. Police arrested Avery and Sanford. Both women are in jail facing murder and attempted murder charges.

The two surviving children are in the hospital in stable condition.