The suspect who allegedly opened fire on a supermarket in Buffalo, New York, on May 14 and fatally shot 10 people while injuring three more had been detained for a mental health check last year after making a school shooting threat, according to officials.
Payton Gendron, an 18-year-old white male, surrendered to police after shooting 13 people, 11 of whom were black, in an attack that officials believe may have been planned for months.
