TPM Livewire

Police Identify Columbia Mall Shooter

AP Photo / Jose Luis Magana

Police did not know whether Aguilar was a student at the University of Maryland. Police also said they have yet to determine whether the shooter had a relationship with the victims -- two store employees at the mall.

Police said that Aguilar purchased the 12 gauge shotgun he used at the mall in December. Detectives are still investigating the motive behind the shooting.