Texas School Stabbing: 'Teen Student Killed' A 17-year-old student has been killed and three other students were injured in a stabbing at a school in Texas, reports say. The attack happened in a hallway leading to the cafeteria at 7.10am local time on the campus of Spring High School, according to the Harris County Sheriff's Office (HCSO). Sheriff Adrian Garcia said there was a confrontation that escalated into a fight. He said investigators had not yet found the weapons used in the attack, the Houston Chronicle reported. Two male suspects were reportedly seen in handcuffs outside the school, north of Houston. Sheriff's deputies said one person died at the scene and two others were flown by medical helicopter to Memorial Hermann-The Texas Medical Center, the Chronicle added. People stand outside the school after the stabbing (Pic: KHOU) News website KHOU reported a 16-year-old male was one of the two people flown to the hospital. Two of the victims suffered minor injuries, according to Mr Garcia. The condition of the third victim is not known. "There is some information that this may have been gang-related," Mr Garcia added. Three persons of interest are being interviewed by investigators. All three are students at Spring High School, HCSO said via Twitter. A woman inside the school told MyFoxHouston.com she heard commotion coming from the school cafeteria, which was followed shortly by an announcement over the intercom calling for a school nurse. Parents have spoken at their concern for their children (Pic: KHOU) She said she walked outside in the hallway all she saw a blood trail lead from the cafeteria to the back of the school. KHOU 11 reporter Jeremy Desel spoke to parents who gathered across the street from the school. One father called Kenneth said: "Well, number one we're concerned about our kids. One of my kids was kind of there in the area when they seen it and they're frantic and scared, and here the police are telling us to move our vehicles. (My son) told me that he was scared and he wants to come home. We can all understand at this point, right? Kenneth said his son described the scene to him, saying the incident appeared to happen in a back hallway. The attack happened at Spring High School They were walking out of the area when it happened, but they sent pictures to me of all the blood everywhere. All they texted and told me was one died and, out of the total, five were stabbed. All students. Jan, whose son is a junior at the school, said: "I'm just trying to make sure that my child is okay. I've actually texted and I've actually called, they are receiving phone calls. They are in their first-period class and everything is calm. Parents of the students who were affected have all been notified, administrators said.