Initial reports described the event as a homecoming party for students of Texas A&M Commerce University, but the university’s police department confirmed in a Twitter message that the event was not on campus.
More than a dozen people were injured, reporter Jason Whitely of WFAA-TV in Dallas reported. He added that the event took place at a nightclub called The Party Venue and that the suspect remained at large.
Graphic video images posted on social media showed several people with gunshot wounds, lying in pools of blood, as panicking bystanders tried to help them.
This is a developing story. Check back for updates.