Martha Nolan-O’Slatarra was found unconscious at the Montauk Yacht Club after a man called 911 around midnight, according to the Suffolk County Police Department. Suffolk police said good Samaritans tried to perform CPR on Nolan-O’Slatarra, but she was pronounced dead by first responders.

Fashion designer Martha Nolan-O'Slatarra died at Montauk Yacht Club. No signs of trauma found, and cause of death remains under investigation.

Suffolk County police have identified the woman who was found dead aboard a boat at the Montauk Yacht Club early Tuesday morning. Martha Nolan-O'Slatarra, 33, died in the incident, police said. She lived in Manhattan.