Three children and a teacher were killed, and two others critically wounded, in a shooting on Thursday at Silver Rail Elementary School in Bend, Oregon, USA.

Axar.az reports, citing CBS News, the suspect, a 16-year-old male, was shot and killed by a bystander, Bend police said.

Along with the teacher, the three children killed were ages 5, 8 and 11, Bend Police Chief Mike Krantz said in a news conference Thursday night. Two others, a 7-year-old child and a 54-year-old teacher, were taken to St. Charles Medical Center with critical injuries. No names were immediately released.

Krantz said that officers were called to the school just before 1 p.m. on a 911 call from a person who said they had been shot at several times while in their vehicle by a suspect with a long gun. Emergency dispatchers then received dozens of 911 calls that the suspect had entered the school.

The shooter forced his way into the school by "shooting at locked doors," Krantz said.

When officers arrived at the school within three minutes of the first 911 call, they discovered that the suspect had been killed by a bystander, Krantz said.

"An officer reported that the suspect had been shot by a community member who had seen the suspect enter the school and pursued him into the school and engaged him," Krantz told reporters.

After officers entered the building, Krantz said, they found the four deceased victims.

There was no word on a motive. Police could also not say if the suspect had a connection to the school. No details were provided on the bystander who shot and killed the suspect.