A 23-year-old man from Boston collapsed at the 25 mile marker on Saturday at the Baltimore Marathon.

The man was taken immediately to the hospital and was reported to have a core body temperature of 107 degrees and was pronounced dead a few hours later.

An autopsy is scheduled for later on in the day today. The local medical examiner will then pronounce a cause of death after looking over the man’s body.

The organizer of the race issued the following statement in regards to the death:

“We are heartbroken about it and it puts a sad note on an otherwise great day for Baltimore,” said Lee Corrigan. “Our hearts go out to him and his family,” he added.