(CNN)Two men died following an Ironman 70.3 triathlon in Madison, Wisconsin, over the weekend, the Madison Fire Department said.Ironman triathlon: Three grueling races in one The Dane County medical examiner's office told CNN affiliate WKOW that McCulloch's death "was consistent with an accidental drowning due in part to a medical event." The office continues to investigate Mahoney's cause of death, the fire department said. "The well-being of our competitors is paramount and we are grateful for the effort and quick support of medical personnel," Ironman said in a statement Sunday to WKOW. "We will continue to work with the local authorities to gather all the details on these incidents and will continue to do everything possible to provide a safe environment for our athletes. In respect of the families and athletes' privacy, we will have no further comment at this time." Ironman didn't immediately respond to CNN's request for comment. Madison Mayor Satya Rhodes-Conway issued a statement Tuesday on the men's deaths. "My thoughts are with the families and loved ones of the two athletes who died while competing in the Half Iron Man on Sunday," Rhodes-Conway said. "It is a tragic coincidence that two men died competing in the same event."
CNN's Sheena Jones contributed to this report.