A day after Sylvie Cachay was found floating dead in the bathtub of her hotel room, her boyfriend, Nicholas Brooks, 24, was charged with second-degree attempted murder and second-degree strangulation. Ms. Cachay, 33, who had been a member of Soho House for about six years, was found with strangulation marks around her neck. An autopsy had not yet determined the cause of death because more tests needed to be conducted by the medical examiner’s office.

Just before 9 p.m. Friday, Nicholas Brooks emerged from the Sixth Precinct station house in Greenwich Village. He was handcuffed and escorted by detectives, who led him to a car.

A 33-year-old swimwear designer was found dead in the bathtub of her Soho House hotel room early Thursday and police were questioning her boyfriend in connection with her death, according to authorities. Sylvie Cachay, the designer of a brand of bikinis called Syla, was discovered in the bathtub of a room in Soho House, a law enforcement official familiar with the case said.

The discovery was made when the hotel staff was alerted by a guest that water was leaking from the ceiling at about 3 a.m., the official said. Upon entering the room, the night manager found her floating face-up in the bathtub with the water running and called police, the official said. Emergency medical technicians declared her dead at the scene at 3:34 a.m., police said. According to the official, hotel employees told detectives Ms. Cachay’s boyfriend was seen leaving the hotel at about 2 a.m. He returned at 5:30 a.m. and was taken to the 6th Precinct for questioning by police. He was identified as Nicholas Brooks, 24 years old. His father, Joseph Brooks, composed the song “You Light Up My Life”. He won the Oscar for Best Original Song in 1977.

Video surveillance from the hotel showed Nicholas Brooks leaving the room several times. Between 1 a.m. and 1:45 a.m. he went to the rooftop restaurant to eat a steak, the official said. He finally left the building with his coat at about 2:15 a.m., the official said. When he returned, he told detectives he had gone out drinking and had left his girlfriend asleep in bed, the official said.

The law-enforcement official said Ms. Cachay appeared to have bruising around her neck, hemorrhaging around her eyes and an apparent bite mark to her right hand. Police said the medical examiners would determine the cause of death.