Two newborns found dead last week in a Chicago day care center bathroom were discovered in a garbage bag after their mother − an employee at the facility − was found covered in blood near their bodies, new information in the case shows.

According to a police report obtained by the Chicago Sun Times, a cleaning worker discovered the baby girls in a first-floor bathroom just before 7 p.m. Thursday at a child care center in Streeterville, a neighborhood in the city’s Near North Side.

USA TODAY has requested a copy of the report from the Chicago Police Department.

The unconscious babies were taken to Lurie Children’s Hospital where police, last week said, they were pronounced dead.

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The babies’ 29-year-old mother, who works at the daycare, also takes a class at the Bright Horizons-operated facility, according to the report obtained by the outlet. When she missed a class Thursday, employees searched for her and, just before 6 p.m., found her in the bathroom and dialed 911.

The woman was transported to Northwestern Memorial Hospital where she underwent surgery, the outlet and local ABC 7 in Chicago reported.

About an hour after she was taken to the hospital, staff began cleaning the bathroom and discovered a black garbage bag in a cabinet with the newborns inside, the outlets reported.

It was not immediately known if she had been charged in connection to her twins’ deaths.

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Their cause of death was not immediately known.

The daycare is on the Northwestern Memorial Hospital campus and no day care children were involved or impacted, hospital spokesman Christopher King told USA TODAY Monday.