Rita Hayworth (Turner Broadcasting)

The 25-year-old son of Princess Yasmin Aga Khan, Hayworth’s daughter, and shipping heir Basil Embiricos was a graduate of Fordham University, according to the NY Daily News. An autopsy will take place to determine his official cause of death.

Hayworth died in 1987 of complications from Alzheimer’s disease, a condition Embiricos helped fight by, he wrote on his Web site, making “significant contributions to the research efforts.”

A spokesperson for the Aga Khan Foundation said in a statement to People that Embiricos’s parents “are deeply saddened” by his death.

“They would really appreciate if their privacy would be respected in the very difficult moment,” the statement said.

The Village Voice’s Michael Musto told People he was “a sweet charming guy.”

“He grew up with a certain properness because he was obviously the grandson of a screen legend and was mildly rebelling against that in certain ways but was always trying to do the right thing,” Musto said.