John F. Hanley, president and chief executive officer of Suffolk Bancorp in Riverhead, N.Y., died Sunday after an extended illness. He was 52.

Mr. Hanley had worked for the $953 million-asset company since 1971. He was named president and CEO of its Suffolk County National Bank affiliate in 1997 and took the same titles at the holding company a year later.

Victor F. Bozuhoski, who was acting chief operating officer during Mr. Hanley's illness, will remain in that post until a successor is named, the company said.

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