Maryland Mall Shooter Identified

Darion Marcus Aguilar, 19

(CNN) — [Breaking News Update 9:43 a.m.]

The gunman in the killings of two workers Saturday at a Maryland mall has been identified as Darion Marcus Aguilar, 19, Howard County Police Chief Bill McMahon said Sunday.

[Previous story published 4:25 a.m.]

A gunman carrying "a large amount of ammunition" and apparent makeshift explosives killed two workers at a busy Columbia, Maryland, mall before turning a shotgun on himself, police said.