Police identified the gunman in Saturday's deadly mall shooting in Maryland as 19-year-old Darion Marcus Aguilar, and told a news briefing on Sunday morning they were still investigating a motive.
It remains unknown whether Aguilar knew the two shop employees who were killed, Bill McMahon, the Howard County Police Chief, said.
The gunman opened fire with a shotgun in a skate shop at the mall in Columbia, Maryland, about 20 miles (32 km) west of Baltimore, on Saturday before apparently killing himself, police said.
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