Suffolk County police are investigating the death on Saturday of a Stony Brook University sophomore from Queens.

Nicholas Holt, 18, died last weekend after being hospitalized following a party in which he was drinking alcohol, according to a statement released by the national chapter of his fraternity, Alpha Phi Delta.

He was treated at John T. Mather Memorial Hospital in Port Jefferson, police said. No information about the cause of death was immediately available.

Suffolk County police said Wednesday that homicide detectives are handling the case as a noncriminal investigation

The Alpha Phi Delta National Organization, which suspended the local chapter after Holt’s death, said he was a member, not a pledge.

It said in a statement that he was drinking April 24 at an off-campus party but that it was unclear if his alcohol consumption played a role in his death.

“The party in question took place at a private residence rented by several of [the] Brothers at the Gamma Omicron chapter of our fraternity,” the national group said, referring to the Stony Brook chapter. “While this incident is under investigation, Alpha Phi Delta’s executive committee has suspended the Stony Brook (Gamma Omicron) Chapter. Further action is pending the results of the local investigation.”

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The national organization said it does not condone underage drinking and did not sanction or authorize the party.

A Stony Brook spokeswoman released a statement saying “It is with great sadness that we can confirm that Nicholas Holt passed away at Mather Hospital on April 29. The university community deeply mourns this loss, and expresses its heartfelt condolences to the student’s family and friends.”

The spokeswoman said the Stony Brook chapter of the fraternity was suspended since March 2015.

Holt’s family could not be reached Wednesday.