Manhunt underway for DART train shooting suspect in Dallas.

One person was killed and two others were injured in a shooting on a DART train in Dallas, Texas, after an altercation broke out between two people. A suspect remains at large, and it is unclear what the disagreement was about. The incident disrupted operations of the Green Line train for hours. This shooting comes after a mass shooting at an outlet mall in Allen, Texas, that left eight people dead and several others injured.