A St. Michael couple now knows what killed their 16-year-old daughter, Michaela Olson, after she collapsed on a run the morning of July 1. Initially thought to be connected to the high heat index on the muggy day or something connected to Olson's asthma diagnosis, the medical examiner confirms instead that it was a common, preventable fungal infection that led to the cut off of circulation to her coronary arteries.

Lori Blomme, 40, collapsed on Monday while leading a class at Menlo Park Academy, her brother-in-law David Blomme told the Star Tribune. She had taught at the northeast Minneapolis school for nine years and students told Fox 9 she was strict but well-loved. A cause of death was not immediately known.

The teenagers were returning to New Richmond, Wis., from Woodbury and authorities say they were trying to get the attention of a girl in another car that had passed them. The driver was searching a center console in the vehicle, authorities said. A fourth teen in the car survived the crash.