LEWISTON — An autopsy shows a 60-year-old Lewiston man, who died after trying to break up a fight in his building, died of a heart attack.

Louis St. Pierre died at a hospital following the apartment house fight on Wednesday night. Police said there was an altercation in the building during which St. Pierre collapsed.

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Police had said they are aware St. Pierre had a history of heart problems, but they were awaiting the results of an autopsy.

A spokesman for the Lewiston police says an autopsy shows that St. Pierre died of a heart attack. He told WMTW-TV that the Maine attorney general’s office is handling the investigation and will determine if any charges will be filed.