NEW HYDE PARK - ? There is a developing story in Nassau County where a man drowned in his pool.

The incident happened around 11:30 p.m. on Lake Drive in New Hyde Park. Police say 51-year-old Chang Kwack jumped into his pool. News 12 Long Island has learned that family members noticed him under the water and pulled him out.

Rescuers performed CPR but Kwack died at the hospital. There is no word on what went wrong.