WASHINGTON — DC Police say a third suspect had been arrested in connection with a quadruple shooting that killed two people and injured two others, including a 2-year-old girl, over one year ago in Southeast.

On Thursday, police charged 21-year-old Dionzai Parker of Southeast with first-degree murder. Parker was already behind bars when they arrested him.

Previously, police arrested 25-year-old Andre Greene in November 2024 and 17-year-old Jordan McClaine in July. Both suspects were charged with first-degree murder while armed.

Police responded to the scene in the 2200 block of Alabama Avenue, Southeast, around 11:20 a.m. on July 18, 2024. When they arrived, they found four victims suffering from gunshot wounds.

Two of the victims, 29-year-old Lamont Street of Capitol Heights, Md., and

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