At the time, officials said the boiler room had carbon monoxide levels exceeding 500 parts per million.

Carbon monoxide (CO) is an odorless, colorless gas that kills without warning. Hundreds of people die each year and thousands of others become ill because of CO, according to the CDC.

Carbon monoxide is known as the “invisible killer” due to being an odorless and colorless poisonous gas.

Carbon monoxide is known as the “invisible killer” due to being an odorless and colorless poisonous gas.

Fire department personnel responded to a call at 12:38 p.m. and found the worker in a boiler room with carbon monoxide (CO) levels exceeding 500 parts per million, authorities said.

A couple was found dead in their Rochester Hills home by firefighters on Friday afternoon after suffering from carbon monoxide poisoning.

Michigan officials are urging residents to check their furnaces and carbon monoxide detectors to make sure they’re working properly this weekend.

The U.S. Consumer Product Safety Commission (CPSC) is warning consumers not to buy or to stop using a set of carbon monoxide detectors sold on Amazon.

Carbon monoxide is known as the “invisible killer” due to being an odorless and colorless poisonous gas.

Kellye Canty and her nine-month-old baby Kanaan had just dropped her mother off for a doctor’s appointment at Harper Hospital. Canty and her baby remained in the car in the parking garage with the car running.

Two people were found dead Tuesday night in a Detroit home in what authorities believe to be a carbon monoxide poisoning.

At 2:47 a.m. Saturday morning Ann Arbor firefighters responded to a carbon monoxide incident outside Pioneer High School.

Country singer Luke Combs is paying the funeral expenses of three young men who saw him perform at a Michigan music festival before they died from accidental carbon monoxide poisoning.

Police have identified the three people killed and the two others in critical condition due to carbon monoxide poisoning at Michigan’s Faster Horses Festival.

Authorities are urging residents to remember to keep generators and exhaust fumes from running vehicles away from camping areas, tents, and travel trailers.

The incident is unrelated to the death of a woman at the festival Saturday morning.

During power outages, people turn to portable generators to keep their lights and appliances working -- but experts warn that if those generators aren’t used properly, they can cause serious consequences.

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SOUTH HAVEN, Mich. – Ten people aboard a boat on Lake Michigan were sickened after exposure to carbon monoxide, authorities in Michigan said Saturday. Authorities received a distress call from the captain of the 32-foot boat that was traveling in Michigan from St. Joseph to South Haven around 2:45 p.m. The boat was intercepted near the South Haven pier. Authorities said all ten people were evaluated and treated at a hospital. Several law enforcement agencies responded including the Van Buren County Sheriff’s office and South Haven Area Emergency Services.

HIGHLAND PARK, Mich. – The girlfriend of one of the men found dead in a Highland Park home wanted police to force entry into the building the previous day when nobody answered the door, officials said. Officials said the girlfriend of one of those men went to the home Saturday and called police when she couldn’t get in contact with anyone. When nobody answered, the girlfriend wanted police to force their way into the home, but there was nothing unusual or illegal going on, so authorities called the landlord. They found the two men dead upstairs, according to authorities. Highland Park officials can’t officially name a cause of death, but someone removing items from the house Monday said there was a heavy smell of exhaust fumes still inside.