A 44-year-old construction worker collapsed with possible heat-related illness while working in 106-degree heat at a Tucson-area Costco Tuesday, and died, authorities said.
The man's name was not released.
Northwest Fire District paramedics were called to the Costco at 3901 W. Costco Drive near Orange Grove and Thornydale, where they found the man in cardiac arrest with bystander CPR in progress. Crews worked to revive his heartbeat but were unsuccessful after 20 minutes of advanced life support measures, said Northwest Fire spokesman Capt. Adam Goldberg.
“Co-workers told responders that the victim had been working on a barrier protection system for a new propane tank that was being installed near the tire shop at the Costco. The victim had experienced symptoms of heat related illness prior to his collapse. Temperatures were 106 degrees throughout the afternoon,” Goldberg said in a news release.
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Marana Police Department was at the scene and is conducting an investigation into the fatality.
The victim was not employed by the Costco, but was a contractor who was doing work at the location.

