Malaysia Goodson, 22, of Stamford, Connecticut, fell in the Seventh Avenue subway station, at 53rd Street, about 8 p.m., officials said. She was unconscious and unresponsive when officers arrived.

She was taken to Mount Sinai West hospital, where she was pronounced dead, police said.

Goodson’s 1-year-old daughter, who was not identified, was found conscious and treated at the scene. She was reunited with her father and grandmother.

It was not clear whether Goodson suffered from a medical condition or if she was killed from the impact of the fall. The city’s medical examiner will determine what caused Goodson’s death, officials said.

Shams Tarek, a spokesman for the Metropolitan Transportation Authority, which operates the subway, said in a statement that the agency would work with New York police to investigate the incident.

“This is a heartbreaking tragedy,” Tarek said.

While officials are continuing to probe the circumstances around Goodson’s fall, her death has shone a light on the lack of elevator service and accessibility issues that have long plagued the city’s subway system.

The Seventh Avenue station — on the B, D and E lines — where Goodson fell does not have an elevator. Only about a quarter of the subway system’s 472 stations have elevators, and the ones that exist are often plagued by malfunctions.

One survey of subway elevator breakdowns found that, on average, each elevator breaks down 53 times a year.

When the elevators are functioning properly, they are often small, odoriferous and positioned at the far ends of stations. That can make them frustrating for disabled subway riders who depend on them and an unappealing option for straphangers who do not.

A lawsuit filed against the transportation authority described New York’s subway system as one of the least accessible in the country and accused the agency of violating the federal Americans With Disabilities Act.

The case, which was joined by the Justice Department in 2018, is still active, according to Disability Rights Advocates, which is representing the plaintiffs.

The subway’s leader, Andy Byford, has promised to add enough elevators to the system by 2025 so that no rider would be more than two stops from an accessible station.

Byford has made accessibility one of his major priorities since joining the transit agency a year ago. He hired Alex Elegudin as the subway’s first “senior adviser for systemwide accessibility.”

Elegudin has used a wheelchair since suffering a spinal cord injury stemming from a deer-related car accident in 2003.

New Yorkers with young children said the scenario was all too familiar. On a popular Facebook group for mothers, one woman posted about her death, saying she hoped it would serve as a “wake up call” for a system that keeps raising fares but fails to help disabled riders and families.

“How many of us do this on a daily basis?” the woman wrote, of lugging her stroller on subway stairs. “I know my family does.”

The Facebook group, UES Mommas, has more than 34,000 members from across the city and beyond. The post quickly drew dozens of comments.

“It makes me even more grateful for the New Yorkers who have helped me with the stroller on the subway,” another woman wrote. “But every station should have an elevator.”

This article originally appeared in The New York Times.