India, Oct. 17 -- Kaylub Giamanco, 36-year-old carpenter, whose two daughters studied at the Silver Rail Elementary school in Bend, Oregon, was identified as the bystander who intervened and fatally shot the 16-year-old suspect, John J. Griffin, before he killed four and injured two at the school on Thursday.

Kaylub Giamanco was identified to NBC News by his brother, Kyle Giamanco. Kyle said that Kaylub was driving past the school for his lunch break when he heard gunshots. He had a concealed-weapon permit and followed the shooter inside the school. He encountered John J. Griffin inside the special education room where the shooting happened. Kyle Giamanco described his brother as a "hero."

According to Bend Police Chief Mike Krantz, whe...