Philadelphia (CNN) -- A worker at a west Philadelphia abortion clinic has pleaded guilty to two counts of murder and may testify against Dr. Kermit Gosnell, the doctor accused of performing illegal late-term abortions, court officials said. Lynda Williams, a former employee of Gosnell's Women's Medical Society clinic, entered a guilty plea Wednesday to six charges, including two counts of third-degree murder. The first charge is for the 2009 death of an aborted fetus that the Philadelphia district attorney's office claims in a grand jury report was born alive. The second is the death of 41-year-old Karnamaya Mongar, who died in a second-trimester abortion, according to Common Pleas Court Judge Benjamin Lerner.
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Clinic worker pleads guilty to six charges
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Authorities allege infants were killed with scissors
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Dr. Kermit Gosnell faces murder charges in the case
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