PHOENIX -- Police say they are searching for suspects after several shots were fired outside a basketball game at Cesar Chavez High School on Friday night.
The high school near 43rd Avenue and Baseline Road was hosting a boys' varsity basketball game against a rival high school, Betty H. Fairfax, when gunfire erupted outside just after 8 p.m.
Phoenix police officers were already on scene providing routine security for the game and tried to keep everyone calm, witnesses said.
People began rushing out of the gym and at least three students were reportedly injured during the stampede.
"We were all inside of the basketball game, enjoying a nice game ... and the next thing you know, you hear gunshots going off," said spectator Orlando King. "From there, everything just went chaotic."
Phoenix police Sgt. Steve Martos said no one was injured by gunfire.
Police originally believed the shots were fired into the air but now believe the suspects were shooting at each other.
Investigators did not find any damage to school buildings.
Martos said police detained two people Friday night for questioning.
Police believe the incident was gang-related.
Students said there had been threats over social media during the week leading up to the game.
"I was just scared for my life," said student Donteya McDaniels, who was waiting for her family to pick her up from the school. "I've never felt fear like that ever in my life."
Anyone with information is asked to call Silent Witness at 480-WITNESS.
Click here to view a letter from the principal regarding the incident
Shots were fired at school event tonight with NO injuries. Two detained by @phoenixpolice for questioning. Anyone with info call 480-WITNESS— Steve Martos (@SgtMartos) February 1, 2014