6 wounded during party at Houston campus

(CNN) - Shots rang out during a community block party on a Houston, Texas, college campus overnight, and authorities believe the flareup was gang-related, a school official said Thursday.

At least six people were wounded Wednesday night at Texas Southern University, and the injuries were serious, though not life-threatening, TSU spokeswoman Eva Pickens told CNN. At least one of the injured was a TSU student, she said.

Pickens said there have been no arrests but police have been questioning people in the case. She said authorities believe Houston-area rival gangs, one from Fresno and the other from Missouri City, communities near Houston, were involved in the shootings.

The violence erupted at what was billed at a privately-sponsored community-wide event with many activities. Local rapper Trae Thompson performed, school supplies were handed out, and HIV testing was performed.

Pickens told CNN on Thursday someone in a car opened fire at a parking lot where people congregated and as the event was breaking up. CNN affiliates reported shootings off-campus as well.

"It's unfortunate that this happened," Pickens said. "It was a really really great event."

As many as 5,000 to 6,000 people attended, Pickens said.

"When you have these open events like that, you never know what will happen," she said.