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Canadian actor Spencer Lofranco -- best known for his starring roles in "Jamesy Boy" and "Gotti" -- has died.

TMZ has learned his death is being investigated in British Columbia, Canada. The cause has not yet been determined. Getty

His brother, Santino Lofranco , paid tribute to the star on Instagram and revealed he passed on Tuesday. He remembered him as a "legend" who "changed people [sic] lives."

We've reached out to their father Rocco Lofranco , a personal injury attorney in Toronto, for comment ... so far, no word back.

Spencer described himself as a naturally funny kid who was "always trying to make people laugh and always the center of attention" in a 2014 chat with Interview . He said he decided to pursue acting seriously at age 17

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