Police on Long Island have arrested a man accused of driving while intoxicated after he crashed his SUV into a nail salon Friday, killing four people and injuring nine others.

An off-duty NYPD officer was among those killed at the salon, according to the Suffolk County Police Department.

The NYPD posted on social media about the death of Emilia Rennhack, 30, an officer in the 102nd precinct in Queens, which covers Kew Gardens, Richmond Hill, Woodhaven and northern Ozone Park.

Suffolk County Police said the other three fatalities were New York City residents. They are identifed as Jiancai Chen, 37, of Bayside, Queens, and Yan Xu, 41, and Meizi Zhang, 50, both of Flushing, Queens. All were pronounced dead at the scene.

The other victims — seven women, one man and a 12-year-old girl — were transported to local hospitals to be treated for their injuries.

Steven Schwally had been speeding through the parking lot when he drove his 2020 Chevy Traverse through the front window of Hawaii Nail & Spa in Deer Park at around 4:30 p.m., according to the SCPD.

Schwally, 64, of Dix Hills, was charged with driving while intoxicated. He was transported to Good Samaritan University Hospital in West Islip for treatment of injuries that were not life-threatening.

Fire officials responding to the crash said he was semiconscious when his vehicle came to stop nearly at the back of the store, which is located in a strip mall.

Suffolk County District Attorney Ray Tierney's office said Schwally, who remained hospitalized Saturday evening, will be arraigned at a later date. Spokespersons for the office and the police department said they did not have contact information for his lawyer.