SPRING, Texas » At least one person has been killed and others injured in an altercation at a high school in suburban Houston.

The Harris County Sheriff’s Office did not say whether the people involved in the fight about 7 a.m. today at Spring High School were all students. But parent Lakesia Brent says her son, a sophomore at the school, told her students were seen bleeding and at least one was on a gurney being transported by medical personnel.

A dispatcher for the air ambulance at Memorial Hermann-Texas Medical Center in Houston confirmed a 16-year-old boy was transported with stab wounds.

The school was under lockdown but parents have been told that students will be released to their care this morning.

Spring is about 20 miles north of Houston.