This photo released by the Howard County Police shows shooting suspect Darion Marcus Aguilar, 19, of College Park, MD. Aguilar carried out the Saturday Jan. 25, 2014, attack with a 12-gauge shotgun at a skateboard shop at the Mall in Columbia in suburban Baltimore before killing himself, police said.

Howard County Police / AP

This photo released by the Howard County Police shows shooting suspect Darion Marcus Aguilar, 19, of College Park, MD. Aguilar carried out the Saturday Jan. 25, 2014, attack with a 12-gauge shotgun at a skateboard shop at the Mall in Columbia in suburban Baltimore before killing himself, police said.