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An 18-year-old man is in hospital after suffering a heart attack while visiting a museum in the US city of Denver.

The man, who has not been named, was on a trip to a Colorado museum when he suffered the heart attack, according to CBS Denver.

He was taken to hospital where he died of his injuries.

The museum in Denver has been closed for the time being.

A spokesman for the museum said the cause of the incident is under investigation.