Sylvia Wynanda Seegrist (born July 31, 1960) is an American woman who on October 30, 1985, opened fire at a shopping mall in Springfield, Pennsylvania, a suburb of Philadelphia.
Seegrist killed three people and wounded seven others before being disarmed by a man who was shopping at the mall.
The individuals killed included two men and a two-year-old boy.Seegrist was 25 years old and had been diagnosed with paranoid schizophrenia ten years earlier.
Having been committed and discharged from mental care several times, her case stimulated discussion about the state's authority to commit at-risk people into mental care facilities versus individual rights.