Olympic medallist Jenny Simpson is receiving treatment in hospital following a "medical incident" at an event in Raleigh, North Carolina.

The 39-year-old American was pacing a mile group at a Sir Walter Miler pop-up event on Tuesday when she reportedly collapsed and needed CPR.

Simpson, who retired from competitive running at the end of the 2024 season, won gold in the 1500m at the 2011 World Championships and a bronze medal at the 2016 Olympic Games in Rio.

In a statement on X, external, the Sir Walter Miler team confirmed the incident and said: "Jenny is receiving excellent medical care, and our thoughts are with her and her family during this time.

"We are incredibly grateful to the individuals who responded immediately, as well as EMS and the medical professionals who handled the situation with such care, urgency, and professionalism.

"We are also thankful to everyone who has reached out with concern and support. We ask that you continue to keep Jenny and her family in your prayers as we all hope for the very best."

Simpson also won silver medals in the 1500m at the 2013 and 2017 World Championships.