Three Vestavia Hills High School students were injured this afternoon when they were moving a portable goal post and it struck a live wire, according to public safety radio transmission.

One of those students, Jack Graffeo, is listed in critical condition, according to a spokeswoman at Children's of Alabama.

Vestavia Hills police and fire, as well as representatives from Alabama Power, responded to the scene shortly before 4 p.m. The students on the lower practice field at the time were members of the schools track and field team.

Three male students were injured. Initial reports were that one student was in cardiac arrest, unconscious and received CPR.Two other students received minor burns - one to the foot and one to a toe.

The students were taken from the scene in ambulances. The other two students, Grant Brown and Garrett Griffin, are listed in good condition, according to Children's.

According to witnesses, there was a small fire on the field after the students came in contact with the live wire. School officials used a defibrillator on the unresponsive student until paramedics arrived.

Fellow track team members were visibly upset, as were several coaches. The students said they were told to not comment publicly on what happened.

Practices on the field and the nearby football field resumed within an hour after the accident. Vestavia Hills City Schools spokesman Whit McGhee was at the scene but didn't make a statement to reporters. Instead, the school sent out this statement:

"We can confirm that an accident occurred today at Vestavia Hills High School. Three students were injured when they came in contact with a live power line near the high school's practice football field. The athletic department's emergency action plan was initiated until first responders arrived. Our immediate priority is the safety and well-being of our students and their families.

We are currently working with the Vestavia Hills Police Department, Fire Department and local officials to determine the cause of the accident and the current condition of the injured students. All details related to the investigation of the incident, including names of those affected, will be withheld until we are certain that all details are confirmed.

The Vestavia Hills City Schools Crisis Communication Team will continue working this evening and tomorrow to disseminate further information with the public. Parents should monitor the district website, www.vestavia.k12.al.us, and our district social media feeds and mobile app for future updates."

Alabama Power released this statement: "We have employees at the high school gathering more information at this time. The entire Alabama Power family joins with the Vestavia Hills community in expressing concern for the students and their families. Our hearts go out to them, and we are keeping them in our prayers."

Vestavia Hills school officials will hold a 9 a.m. press conference Thursday.

This is a developing story and will be updated as more information is available.