Oregon school shooter ID'd, used shotgun bought by mother, source say

The 16-year-old gunman who shot and killed three children and one teacher at Silver Rail Elementary School in Bend, Oregon, on Thursday has been identified as John Griffin, two law enforcement sources briefed on the investigation told CBS News. Police say he was shot and killed by a bystander at the school.
The attacker used a shotgun purchased by his mother, law enforcement sources told CBS News.
A motive for the attack has not been provided. The suspect was from Bend, but police have not said if he had a connection to the school.
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