A Houston high school was evacuated on Tuesday due to an explosion on campus.
Students and administrators were ordered to leave Klein Forest High School at around 1 p.m. after a firework exploded in the school's cafeteria, causing at least one possible injury, fire officials said.
Investigators with the Harris County Fire Marshal's Office said four people were injured, but they were minor and no one had to be taken to the hospital.
One person was taken into custody, but police are continuing to look for others who may have been involved. Officials said video was being reviewed to determine others who may have been responsible.
There were about 4,000 people in the school building at the time, officials said.
Earlier, the fire marshal had said at least one person was injured.
"Preliminary information is a firework was ignited inside the school cafeteria, causing possible injuries to one person," the office tweeted Tuesday afternoon. "More info will be available as soon as investigators arrive on scene."
The school offered possibly conflicting information earlier, saying, "All Klein Forest High School students and staff are safe."
The school was dismissed for the day and all after-school activities were canceled.
The Bureau of Alcohol, Tobacco, Firearms and Explosives said it was on the scene of the explosion, but directed questions to the Harris County fire marshal.