SPRING, Texas -

One person was killed and three others injured after a stabbing Wednesday morning at Spring High School. Authorities say one lone suspect has been arrested in the case and is now charged with murder.

It happened around 7:10 a.m. at Spring High off I-45. Authorities said two school employees called police saying multiple people had been stabbed.

The soccer coach who dialed 911 stayed on the line with dispatchers until paramedics arrived, describing the tragic scene as school nurses and an athletic trainer gave CPR to the victim.

"We were told there was a fight. People started running. The next thing you know we had to get on the ground," the coach said on the call.

The coach then told police the victim was having trouble breathing. The coach told dispatchers three other students were in the nurse's office with stab wounds while this was all going on.

The sheriff's office confirmed that three people were injured and one person was killed during the incident that started with a physical confrontation involving a "cutting instrument."

One of the three students, a 16-year-old boy, was transported via LifeFlight to Memorial Hermann Texas Trauma Institute. He's listed in good condition.

Two other patients were transported via ambulance to Houston Northwest Medical Center with minor injuries. Of those two victims, one was transported to Memorial Hermann Texas Trauma Institute Wednesday afternoon in good condition.

The dad and aunt of 17-year-old Joshua Broussard confirmed to Local 2's Robert Arnold that the sophomore was killed in the stabbing.

"I went in, but I didn't want to go all the way to see him laying on the ground. That would have been too drastic," said Jason Broussard, Joshua's father.

Sources told Local 2 the trouble may have started on Tuesday, when Broussard elbowed another student's girlfriend.

According to investigators, just before the bell rang on Wednesday, someone allegedly bumped one of the victims as he walked through the cafeteria. A fistfight erupted and quickly turned deadly.

Investigators believe only one of the four suspects was armed with a knife and in just a few seconds he managed to stab all four victims. Authorities have not recovered the weapons used during the incident.

Investigators say school police responded in less than a minute, but by that time Broussard was already dead.

The Harris Co. Sheriff's Office said the sole suspect in the case is 17-year-old Luis Alonzo Alfaro. He has been charged with murder.

Deputies earlier took four persons of interest into custody to question them. Two of them -- a 16-year-old and a 17-year-old -- are now considered witnesses to a crime, according to investigators.

Detectives also took an adult relative of one of the suspects into custody after he refused to cooperate with investigators when they went to his house.

All of the victims and three of the persons of interests are students in Spring ISD, according to the Sheriff Garcia.

Sheriff Garcia said investigators were looking into suggestions that the stabbings were related to gang activity. However, deputies had not been called to the school about gang violence before Wednesday.

Broussard's family said the teen had nothing to do with gang relations.

"He wasn't a bad kid, he wasn't with no gangs or none of that. He was straight books and school," said Jason Broussard.

Jason Broussard also said his son was a true cowboy.

"He was in the rodeo, teen roping. (He) liked horses, cattle, anything to do with farming," said Jason Broussard.

Jason Broussard believes his son was just in the wrong place at the wrong time.

Robert Johnson, Joshua Broussard's grandfather, said all he wants is justice.

"I think they need to be caught and prosecuted," said Johnson.

A pastor for another of the young victims says he believes Wednesday's stabbing is more about senseless violence than gang activity.

"This was not gang violence, this was not gang violence. This was a lack of supervision and kids in a difficult situation were left uncovered and unprotected," said Pastor E.A. Deckard with the Greenhouse International Church.

When Local 2 Investigates tried to speak with Spring ISD Police Chief Victor Mitchell about gang activity on the campus...

"We'll I'm not sure of the gang activity on our campus, but one of the things we've done to make sure we don't have gang activity on our campus is we've implemented a gang task force to deter activity," Chief Mitchell said.