Harry Joseph Doyle, 62, died of multiple gunshot wounds at a beach resort in Surigao City on Sunday.
Police in the Philippines say he was approached by two men, who apparently asked for food.
Doyle reportedly pushed one of the men and the other man drew a pistol and fired at Doyle several times, police said.
The two suspects fled and police are investigating.
Doyle's Facebook page lists Surigao City as where he lives.
He had moved to the Philippines about seven or eight years ago, but still owns several properties in Fredericton.
He was "quite a character," according to his friend, Coun. Stephen Chase. They went to high school together.
Doyle also attended St. Thomas University and the University of New Brunswick, according to his Facebook page.
He listed himself as self-employed.