BREAKING UPDATE: 3 children, 1 adult dead, in Silver Rail Elementary School mass shooting, suspect neutralized in Bend, Oregon

The students killed were ages 5, 8, and 11. Two more victims, a 7-year-old child and a 54-year-old teacher, remain hospitalized in critical condition. One teacher died on scene, according to police.

Police said a bystander witnessed the shooter walk into the school. The bystander ran inside and neutralized the killer.

The Bend Police Department first started receiving reports of an individual firing numerous shots into a vehicle at 12:59 pm. Shortly after, dispatch received dozens of 911 calls reporting that a gunman had entered the school and started shooting. Bend Police officers arrived on scene at approximately 1:02 pm. Seconds later, the suspect was neutralized.

The gunman entered the school by shooting at locked doors, according to Bend Police Chief Mike Kantz.

About 100 law enforcement officers responded to the shooting. Authorities evacuated over 400 students room-by-room.

"The reunification location for families is at Journey Church, 61303 S Highway 97 near Goodwill and Dairy Queen. Students' families are asked to respond there," the Bend Police Department said in a Facebook post.

"These are the kinds of things we never want to see happen in Bend. It's devastating," Bend Police Communications Director Sheila Miller said, holding back tears.

The Bend-La Pine School District has cancelled all classes and athletic events for Friday, October 16.

More information about the shooter has not yet been revealed. There will be another press conference on Friday afternoon, officials said.

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