An investigation is underway into a CTrain argument that led to two people being shot Saturday night. Police say they responded to Stampede Victoria LRT station just after 8 p.m. Saturday night for reports that an argument between three people on a CTrain emptied out onto the platform at Stampede Victoria station, where one person pulled a gun and shot the two others they had been arguing with. The shooter then fled the station. Two people were transported by EMS to hospital, one in stable condition and the other in life-threatening condition. Police later issued an update on the victims saying they had received medical treatment and been upgraded to stable condition. Police say the offender was later discovered downtown and arrested without incident.