Mourners gather at Beacon Baptist Church for a vigil after five people were gunned down in Raleigh, North Carolina. The 15-year-old boy who allegedly killed five people and injured two last week in Raleigh was found with a shotgun, a handgun, and a knife.
Mandatory Credit:	Melissa Sue Gerrits/Getty Images

Mourners gather at Beacon Baptist Church for a vigil after five people were gunned down in Raleigh, North Carolina. The 15-year-old boy who allegedly killed five people and injured two last week in Raleigh was found with a shotgun, a handgun, and a knife.
Mandatory Credit: Melissa Sue Gerrits/Getty Images

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Suspect in Raleigh shootings likely killed his 16-year-old brother first, according to preliminary report

Investigators believe a 15-year-old boy killed his older brother before continuing a shooting rampage that killed four others and injured two last week in North Carolina's capital, according to a preliminary report from police released Thursday.