Dion Pelzer murdered David McDonald: authorities

The Amy Lowell apartments, where authorities say Dion Pelzer murdered David MacDonald in February 2023. (Screen capture: NBC Boston)

Authorities say a fugitive entered an elderly man’s apartment and fatally cut him in the throat before serving himself a snack. Defendant Dion Pelzer, 30, ate food belonging to victim David MacDonald, 75, slept on the slain man’s sofa and left the next morning, according to the Suffolk County Prosecutor’s Office in Massachusetts.

Prosecutors said Pelzer was wanted in Brooklyn, New York, for cutting a person Jan. 23 with a knife, leaving the victim with multiple injuries. A few weeks later, on February 15, he walked up to MacDonald’s apartment building in Boston’s West End neighborhood. Surveillance footage showed him entering the secure building behind a resident around 9:30 p.m., authorities said.

“Pelzer took an elevator to the 11th floor, where video shows him trying to enter numerous apartments,” the prosecutor’s office wrote. “He then took the elevator to the 10th floor before returning to the 11th floor to continue testing the doors.”

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