Members of the Lawrence Police Department Gang Unit, received information from Detectives from the Tewksbury Police Department that they had a male from Lawrence in custody for unlicensed operation of a motor vehicle. As the male was being processed at the Tewksbury Police Station he confessed to have an illegal firearm in his apartment in Lawrence. The male provided detailed information as to the location within his apartment, as well as a description of the container the firearm was stored in. He also signed a consent to search form, as well as provided keys to his apartment. The male returned to the Sargent Street apartment in the custody of the Tewksbury Detectives, and pointed out the location of the firearm.

Omar Arias Casilla age 33 of Lawrence was arraigned in Lawrence District Court charged with firearms related charges.