Update 6 p.m. EDT May 16: Three people have been charged following the death of Marlen Ochoa-Lopez.

A mother and a daughter have been charged with strangling Ochoa-Lopez according to WMAQ-TV.

According to Chicago police Superintendent Eddie Johnson, Clarisa Figueroa and her daughter Desiree are facing murder charges in the death of Ochoa-Lopez.

The boyfriend of Clarisa Figueroa has been charged with concealing a homicidal death according to WLS-TV.

Original report: Four people are being questioned in connection with the strangling death of a pregnant woman whose baby was "forcibly removed" from her womb, Chicago police said Wednesday.

According to the Chicago Sun-Times, investigators found the body of Marlen Ochoa-Lopez, 19, in a garbage can behind a southwest Chicago home after detaining the "persons of interest" Wednesday, police spokesman Anthony Guglielmi said. Authorities did not release their names or announce any charges against them.

Ochoa-Lopez, who was nine months pregnant when she vanished last month, died from ligature strangulation in a homicide, the Cook County Medical Examiner's Office said. Her baby was cut from her body, sources told the Sun-Times.

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On April 23, the same day that Ochoa-Lopez was last seen, paramedics responded to a report of a "newborn in distress" at the home where her body was found weeks later, fire officials told the Chicago Tribune. Guglielmi said the baby is still in "grave" condition at a nearby hospital, The Associated Press reported.

Cecilia Garcia, a spokeswoman for the victim's family, said authorities confirmed Tuesday that the newborn was Ochoa-Lopez's using a DNA test, WBBM-TV reported.

Family members believe that a 46-year-old woman lured Ochoa-Lopez to the home by offering her free baby clothes on a Facebook group, Garcia said. After Ochoa-Lopez was killed, the woman called 911 and said she had given birth to a baby who wasn't breathing, sources told WBBM and the Sun-Times.

The woman also started a GoFundMe campaign seeking donations for the child's medical expenses, Garcia said. The page was later removed, WBBM reported.

– The Associated Press contributed to this report.

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A conceptual rendering of a planned permanent exhibit space to be built on the second floor at Fernbank Musuem. The "Changing Earth" exhibit will be the largest of three renovations planned at Fernbank and will replace the "A Walk Through Time in Georgia" exhibit. (Courtesy of Fernbank Museum)

Credit: Courtesy of Fernbank Musuem