CHARLOTTE, N.C. -- Competition at a major track and field event resumed at 7 p.m. Thursday as a heat advisory expired in Charlotte.

The USA Masters track and field championships suspended events Thursday at noon at UNC Charlotte after three athletes suffered heat-related illnesses and were taken to a hospital.

The temperature on the track measured almost 130 degrees.

Organizers announced Thursday evening that the track meet would operate again Friday on a split schedule because of another heat advisory for Charlotte.

Events will be suspended Friday afternoon during the hottest part of the day.

Competing athletes range in age from 30 to 90.