The tip led to arrests and the seizure of multiple guns, Richmond Police Chief Gerald Smith said July 6.
Mandatory Credit:	Steve Helber/AP

The tip led to arrests and the seizure of multiple guns, Richmond Police Chief Gerald Smith said July 6.
Mandatory Credit: Steve Helber/AP

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A tip from a 'hero citizen' thwarted a mass shooting planned for July 4 celebration in Richmond, Virginia, police say

One phone call saved countless lives and prevented a potential mass shooting during July 4 celebrations in Richmond, Virginia, the police chief and mayor said Wednesday.