Heat suspected in Md. biker's death
A 20-year-old biking in Maryland has died after going into cardiac arrest and authorities suspect heat could be a factor.

Prince George's County Fire and Rescue officials say the man seemed to have gone unconscious while biking around 11:15 a.m. They say witnesses saw the man hit his head on a tree as he fell from his bike.

Paramedics found the man in cardiac arrest and displaying possible signs of heat-related illness. They took him to Fort Washington Hospital Center but he died shortly after arriving. Paramedics said in a press release that high temperatures and humidity “more than likely” played a role in the death. Area temperatures were in the 90s when the incident occurred.

There is a National Weather Service excessive heat warning for the D.C. area, including parts of Maryland and Virginia.