(CNN) Three men were found dead inside a travel trailer Saturday at a country music festival in southern Michigan in what police believe is a case of carbon monoxide exposure, officials said. Two other men inside the trailer were taken to a hospital after first responders found them unresponsive and performed CPR at the scene, the Lenawee County Sheriff's Office said in a news releaseThe pair were in critical condition and being treated for acute carbon monoxide poisoning, police said. Emergency officials responded to the trailer after receiving a call around 1:27 pm Saturday regarding unresponsive people at a campground in Woodstock Township during the Faster Horses Festival, a multi-day country music festival. "The caller was a friend of the five males and became concerned when he had not heard from them," police said.

Source: CNN July 18, 2021 10:07 UTC