A 24-year-old Indiana woman is facing reckless homicide charges after allegedly fatally striking three siblings as they crossed a street to board a school bus on Tuesday morning. Indiana State Police say the three children, 9-year-old Alivia Stahl and her two twin brothers, Xzavier and Mason Ingle, were crossing a two-lane road near Rochester to board the school bus when they were hit. The bus had stopped and deployed its stop arm to indicate that children were boarding, police said. The three children died at the scene, while a fourth unrelated child also suffered serious injuries. “I haven’t seen first responders and troopers cry in a long time,” Indiana State Police Sergeant Tony Slocum told ABC 7. “When the children’s father had to make identification of his children, that was just gut-wrenching… It was heartbreaking. It’s still heartbreaking,” he said. The driver of the truck, Alyssa Shepherd, has been arrested on reckless homicide charges and charges of passing a school bus when its arm signal device is extended.