The beautiful swimsuit designer found dead in a bathtub at the swanky Soho House was strangled and drowned, the Medical Examiner’s Office ruled yesterday.
Sylvie Cachay, 33, was found partially clothed in the overflowing bathtub in her room at the ritzy hotel early on Dec. 9.
She was killed by a combination of strangulation and drowning, said an ME spokeswoman.
Cachay — who had attended the Paris School of Art and Design and started the swimsuit line Syla — had wounds on her neck, bleeding in her eyes and a bite mark on her hand.
Her boyfriend, Nick Brooks, whose dad is Oscar-winning songwriter — and accused rapist — Joseph Brooks, will likely face upgraded charges of murder.
The elder Brooks, who wrote the schmaltzy “You Light Up My Life,” faces an 82-count indictment for allegedly raping 11 young women whom he promised to turn into movie stars.
Nick, 24, has thus far been indicted only on strangulation charges in the slaying, a source familiar with the grand-jury proceedings told The Post.
But now, prosecutors can present a murder case to the grand jury before his next scheduled court appearance Tuesday, the source said.
The grand jury that heard the initial evidence remains active until Tuesday so a new panel will not have to be seated.
That’s when the indictment is scheduled to be unsealed.
Nick Brooks has been behind bars since he was arrested the day after Cachay’s murder.
Friends had said she was trying to end things with him shortly before her death.
An apology note written by Brooks that was found in her purse showed he hadn’t accepted the break-up, prosecutors said.
Initial autopsy reports were not conclusive because there was the chance that she had overdosed on prescription pills and accidentally drowned.
When she checked into the Soho House, she told employees that she had taken Xanax and could barely stay awake.
A concierge had to carry her to her room and the pill bottle was found inside.
ME spokeswoman Ellen Borakove refused to divulge the results of Cachay’s toxicology report.
The Manhattan DA’s Office had no immediate comment on whether it would seek murder charges.
Additional reporting by Dareh Gregorian