A Philadelphia doctor has been charged with murder after an investigation revealed the death of several babies and a 22-year-old mother at his "house of horrors" clinic.

Prosecutors said Dr. Kermit Gosnell made millions by doing as many illegal late-term abortions as he could for more than 30 years.

State regulators ignored complaints about him and failed to inspect his "Women's Medical Society" clinic since 1993.

"[Gosnell] induced labor, forced the live birth of viable babies in the sixth, seventh, eighth month of pregnancy and then killed those babies by cutting into the back of the neck with scissors and severing their spinal cord," District Attorney Seth Williams said.

Gosnell is named in at least 46 malpractice suits, including the case of a woman who died of sepsis and a perforated uterus.

The 69-year-old is accused of severing the spinal cords of seven late-term babies born alive. A grand jury report said he also instructed workers in his clinic to do the same.

Authorities discovered Gosnell's activities during a drug-related raid on his clinic last year.

Gosnell and four workers were charged with murder, while five others were charged with controlled drug violations and other crimes.