Four people were killed and two others critically wounded in a shooting at Silver Rail Elementary School in Bend, Oregon, on Thursday.

Among the deceased were a teacher and three children 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.

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, Kantz said.

When officers arrived at the school, 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, according to CBS News. 

The four victims were found inside the school.