Three kids were hospitalized after ingesting an "unknown substance" Friday morning in Grand Crossing on the South Side. Paramedics were called to Henry O. Tanner Elementary School, 7350 S. Evans Ave. around 11 a.m. for three 6-year-old girls suffering from abdominal pain after ingesting the undisclo sed substance, Chicago police and fire officials said. They were taken to Comer Children's Hospital in fair condition, police said. No other injuries were reported. ...read more read less