The Latest: 16-year-old kills 3 children and a teacher at Oregon elementary school

A 16-year-old opened fire at an elementary school in Bend, Oregon, on Thursday, killing three children and a teacher before he was shot by a person at the scene who pursued him into the school, according to the chief of police.The three children killed were aged 5, 8 and 11. Another child, 7, and a teacher, 54, were injured and taken to the hospital in critical condition, authorities say.Police said they did not know if the shooter, a Bend resident, knew anyone at the school or whether he had attended.The Latest:Officials will provide an update on the shootingOfficials plan to hold a news conference at 2 p.m. PDT Friday at the Bend Municipal Court about the shooting at Silver Rail Elementary. They say they will provide the latest information and share resources that are available for community members.The shooting was the 28th mass killing in the US this yearThat’s according to a database maintained by The Associated Press and USA Today in partnership with Northeastern University. See