Get all the news you need in your inbox each morning. “I heard a big pop and we all turned around and tried to find out what it was, and then three more pops after that and we all took off running to the left side of the cafeteria,

Police said the suspect sustained a self-inflicted gunshot wound and the school district said Antioch High School is on lockdown.

A student opened fire inside Antioch High School, shooting two other students and then himself, the authorities said. A female student and the shooter were killed, officials said.