Three high school football pals have been found dead and two more are in a critical condition in hospital after suffering suspected carbon monoxide poisoning believed to have been caused by a generator in a travel trailer at a country music festival. Five men in their late teens and early twenties were found unresponsive inside the trailer at the Faster Horses Festival in Brooklyn, Michigan, on Saturday after a concerned friend told police they had not heard from them in some time. They were identified as Dawson Brown, 20, Richie Mays Jr, 20, and Kole Sova, 19, MLive.com reported. 'My heart is breaking for these families and the ones still fighting for their lives,' said Mays' mother, Amy Satterthwaite, referring to two more friends who were at a hospital. Dawson Brown (left), 20, and Kole Sova (right), 19, were among three men who died of suspected carbon monoxide poisoning at a country music festival in central Michigan on Saturday. All three victims were friends and played on the high school football team at Michigan Center High School Richie Mays Jr, 20, was also name as one of the victims who died at the festival on Saturday Authorities are also investigating a fourth death at the festival, unrelated to the suspected carbon monoxide poisoning. Melissa Donna Havens, 30, was found dead at the three-day music festival on Saturday morning, according to Michigan State Police. The cause of Havens' death has not been determined, and an autopsy and toxicology test will be carried out, police said. They are seeking a man who was allegedly seen with her in the hours before her death. He is described as black, in his 30s, with short black hair, a short beard and wearing a gray hoodie. Five men were found unresponsive inside a travel trailer during a country music festival in Brooklyn, Michigan over the weekend in what police are investigating as a carbon monoxide exposure, officials said. Three of the men died and two were rushed to hospital. Investigators are also probing the death of a 30-year-old woman whose body was found nearby. Jason Aldean (above) performed at the festival at Michigan International Speedway on Sunday Melissa Donna Havens, 30, was found dead at the festival on Saturday morning, according to Michigan State Police The man being sought was seen with Havens less than 24 hours after her body was found, according to investigators. Brown, Mays and Sova graduated from Michigan Center High School in Michigan Center. Brown, who was Sova's cousin, had a landscape and lawn business that employed two people. He also wore a tattoo that read 'Live a life that outlives you.' Brown was the oldest of three chidren. He is survived by his parents and his younger siblings - sister Taum, 15, and brother Braylon, 13. During his high school football playing days, he was known as 'Touchdown Dawson Brown,' a moniker coined by his grandfather. Mays had talked about selling insurance. His mother, Amy Satterthwaite, said that her son planned to become a millionaire by 25. Richie Mays Jr and Kole Sova are pictured above during their playing days on the high school football team at Michigan Center High School Brown, who was Sova's cousin, had a landscape and lawn business that employed two people. He also wore a tattoo that read 'Live a life that outlives you.' Mays had talked about selling insurance. His mother, Amy Satterthwaite, said that her son planned to become a millionaire by 25 Kole Sova is pictured left with his brother, Brady Sova. Kole Sova was a three-sport star athlete who graduated at the top of his class 'The really hard, saddest thing out of this is just what’s not going to happen for these boys whose futures were so bright,' Kole’s father Jerry Sova told MLive.com. Sova was a three-sport star athlete who graduated at the top of his class. He worked at the Jiffy Mix plant in Chelsea and had taken college classes. Jerry Sova said he was told that all three of them died in their sleep, meaning they did not suffer. 'So I want people to know that,' he said. 'I think that'll help, help the community heal a little bit. I think that's important.' According to the family, Mays' grandfather suggested that the boys place the generator at the back of the camper. But the generator was instead placed at the front because Mays didn't want to disturb girls who were sleeping in a nearby tent. Jake Haskell, 20, a friend of the three who was also at the festival, said that many other campers had the same set-up. The death of the three is considered a 'freak accident.' Lenawee County Central Dispatch responded to a 911 call around 1:30 p.m. at Woodstock Township campgrounds. First responders administered CRP, but three of the men, all in their early 20s, were pronounced dead at the scene. The other two men were transported to a hospital and remain in critical condition while being treated for acute carbon monoxide poisoning. The male victims have not yet been named by officials. According to police, exposure to the carbon monoxide is believed to be from a generator which was located very near to the trailer. Officials have stressed the importance of keeping generators and exhausts from running vehicles away from camping areas, tents and travel trailers. Carbon monoxide is a colorless, odorless, tasteless gas which is produced by burning gasoline, wood, propane or charcoal or other fuel, and inhaling too much of it can be deadly. When too much carbon monoxide is in the air, your body replaces the oxygen in your red blood cells with carbon monoxide. Poisoning occurs when carbon monoxide builds up in your bloodstream and often leads to serious tissue damage, or even death. Three of the men were pronounced dead after medical staff administered CPR Faster Horses Festival is a three-day event that included performances from Luke Combs, Thomas Rhett, Jason Aldean and Kelsea Ballerini. Pictured in this photo Thomas Rhett performs at the 2021 Faster Horses Festival Fast Horses Festival was a three-day event that was held this year at the Michigan International Speedway, which is located some 80 miles west of Detroit. The festival included performances from Luke Combs, Thomas Rhett, Jason Aldean and Kelsea Ballerini. It ended on Sunday. DEATH INVESTIGATION: Detectives from the First District Special Investigation Section are investigating a death of a 30 year old female from Croswell, MI at Faster Horses Festival in Cambridge Township, Lenawee County. — MSP First District (@MSPFirstDist) July 17, 2021 Faster Horses Festival was a three-day event that included performances from Luke Combs, Thomas Rhett, Jason Aldean and Kelsea Ballerini. Pictured in this photo Kelsea Ballerini performs at the 2021 Faster Horses Festival Silent killer: How to spot carbon monoxide poisoning Carbon monoxide poisoning occurs when carbon monoxide builds up in your bloodstream. When too much carbon monoxide is in the air, your body replaces the oxygen in your red blood cells with carbon monoxide, according to Mayo Clinic. It is caused by inhaling combustion fumes and when too much carbon monoxide is in the air you're breathing, your body replaces the oxygen in your red blood cells with carbon monoxide. This prevents oxygen from reaching your tissues and organs and can often can lead to serious tissue damage, or even death. It is a colorless, odorless, tasteless gas produced by burning gasoline, wood, propane, charcoal or other fuel. Improperly ventilated appliances and engines, particularly in a tightly sealed or enclosed space, may allow carbon monoxide to accumulate to dangerous levels. Signs and symptoms can be subtle but others can prove to be more serious. Symptoms of carbon monoxide poisoning often include: -Dull headache -Weakness -Dizziness - Nausea or vomiting - Loss of consciousness -Blurred vision If you suspect you might have carbon monoxide poisoning, get into fresh air or seek emergency medical care immediately. Advertisement All rights reserved for this news site (dailymail) and under his responsibility