A prominent Manhattan fashion entrepreneur, 33‑year‑old Martha Nolan‑O’Slatarra, was discovered dead aboard a docked vessel at the Montauk Yacht Club in the early hours of Tuesday.Authorities are treating the case with urgency, and homicide detectives have joined the investigation, People reported.Local law enforcement responded moments after a 911 call from a passerby reporting an unconscious woman on a boat moored near Star Island Road. Good Samaritans attempted CPR at the scene, but Nolan‑O’Slatarra was pronounced deceased by first responders..A preliminary medical examination and subsequent autopsy conducted by the Suffolk County Medical Examiner’s Office revealed no outward signs of violence. The cause and manner of death remains undetermined pending toxicology and additional testing.Authorities have not ruled out foul play. The Suffolk County Homicide Squad is leading the probe, canvassing yacht club members and boat owners, and reviewing surveillance and digital records, ABC reports.Eyewitnesses report hearing late‑night screams emanating from the dock area shortly before the body was discovered around midnight.One boater reportedly called out, “That’s my girlfriend,” apparently in response to events unfolding on board..Originally from Carlow, Ireland, Nolan‑O’Slatarra moved to New York in 2015 after earning degrees at University College Dublin. She co‑founded East × East, a resort wear and swimwear brand known for sustainable styling, and was also associated with the unisex label Duper and a marketing consultancy, the NYP reported.Just weeks before her death — in early July — she celebrated on TikTok the opening of an East × East pop‑up at Gurney’s Resort, Montauk. Her final post read: “POV: the brand you started 3 years ago has a pop‑up in the Hamptons.