Students and staff are remembering the Pius X student who died suddenly. Members of the Lincoln Pius X High School football team were doing informal conditioning exercises when John Liescheski collapsed.

He was later pronounced dead at BryanLGH East.

There's still no word on why 17-year-old Liescheski suddenly collapsed while doing wind-sprints, but the school's principal says Liecheski and his teammates had just finished a 30 yard sprint when John said he felt dizzy. At first, friends thought he was joking... then he fell down.

Now the school is mourning the loss of one of their own.

On a beautiful spring day, it's hard to understand why a strong young football player like John Liesheski could so abruptly be taken from this world.

"The immediate shock of it was just very very difficult," said Pius X principal Tom Korta.

After running windsprints John told teammates he didn't feel well.

"...he said he felt a little light headed, but again, part of his sense of humor, they thought he was just joking around with them."

Then, John collapsed. His coach performed CPR. For some unknown reason, John died anyway.

"He had no medical history, no asthma, or anything that would indicate there was a problem like that," said Korta.

The medical reason for John's death won't answer the question, why?

"[He was] a good kid. He made good choices in terms of moral decisions and staying away from some of the temptations that sometimes teens get into with drugs and alcohol and those types of things."

John's football number, 59, on the window of nearly every car in the Pius parking lot paints the picture of a well liked kid.

"He was a funny kid; had a great sense of humor. [He] always had a grin on his face; always was lifting people up; great work ethic," said Korta.

Principal Korta says John wasn't the best football player, but he was the hardest working. The team was rallying around him and John wanted to make sure they had a good season. Now that he's passed, they have an even better reason to win one for John.

"Kids have already been talking about, 'we're going to dedicate this year to John," said Korta with a smile. "Kids are gritting their teeth and they're saying, 'all right John, we're going to make sure that your memory lives on and that we honor your memory by giving it our very best this season."

The memorial marking the spot where John fell received a steady stream visitors Friday; students, teachers, parents and friends who mourned Johns death and tried to make sense of what has happened. Principal Korta says the school brought in councilors to help students cope as well as planned special church services to honor his memory.

The County Attorney says an autopsy to determine the cause of death has been delayed until Monday when his mother, who was in France visiting a daughter. returns.