Boy killed in San Bernardino school shooting survived heart surgery 04/11/2017 3:13 pm PDT Comments KRON via KRON SAN BERNARDINO, Calif. -- (KRON) -- An 8-year-old boy shot and killed along with his teacher at a San Bernardino school was born with a genetic condition and had survived heart surgery. Schools superintendent Dale Marsden said Tuesday that Jonathan Martinez had Williams syndrome, a rare disorder characterized by learning delays, mild intellectual disability and heart problems. Marsden said children with Williams tended to be social, friendly and endearing. He said by all accounts Jonathan was a happy child. Jonathan died at a hospital after being shot Monday by the estranged husband of the boy's teacher, Karen Smith, who was also killed. Officials said a 9-year-old classmate who was also shot is stable, watching cartoons, and expected to recover. FULL STORY: Boy killed in San Bernardino school shooting survived heart surgery - KRON #California #SanBernardino #SouthernCalifornia Related Stories San Bernardino shooting: Man kills wife, self; 1 student dies Gunman had been married to teacher less than 3 months: police Waiting for your permission to load facebook comments.