A Hutchinson woman has pleaded Not Guilty to accusations that she attempted to kill her 5-month-old son earlier this month. 24-year-old Katie Elaine Lewis has been charged with 3rd-degree assault, child endangerment, and domestic assault by strangulation for the incident at Children’s Hospital in St. Paul. Lewis had brought the infant into the hospital for tests and insisted that the child had stopped breathing. Hospital workers found nothing wrong with him at the time, but a staffer later allegedly witnessed Lewis pinching the infant’s nose and covering his mouth. The actions were recorded by a video surveillance camera. Staff members reportedly stopped the assault and Lewis was taken into custody and the child brought to a safe location.