HOUSTON -

A medical examiner is trying to figure out what caused a seemingly healthy 5th grade student to collapse and die during a charity run.

Officials say 11-year-old Mikey Pratt, a student at Greenleaf Elementary, collapsed after crossing the finish line on Saturday morning at Cypress High School.

Mikey died several hours later.

The School told Local 2 he was a member of the Running Club and had no obvious medical conditions.

His funeral will be held on Dec. 21 at Rosewood Funeral Home.