A grandmother looking for her lost cat apparently fell into a sinkhole that had recently opened above an abandoned western Pennsylvania coal mine and rescuers worked late into the night Tuesday to try and find her.

Bright lights illuminated snow flurries and various equipment at the site while crews worked above and below ground, video from the scene showed.

Crews lowered a pole camera with a sensitive listening device into the hole in Marguerite on Tuesday morning but it detected nothing. A camera lowered into the hole showed what could be a shoe about 30 feet (9 meters) below the surface, according to Pennsylvania State Police spokesperson, Trooper Steve Limani.

“It almost feels like it opened up with her standing on top of it,” Limani said.

The family of Elizabeth Pollard, 64, called police at about 1 a.m. Tuesday to say she had not been seen since going out Monday evening to search for Pepper, her cat.

Police said they found Pollard’s car parked near Monday’s Union Restaurant in Marguerite, about 40 miles (65 kilometers) east of Pittsburgh. Pollard’s 5-year-old granddaughter was found safe inside the car.

This Tuesday, Dec. 3, 2024. image provided by the Pennsylvania State Police shows the top of a sinkhole in the village of Marguerite, Pa., where rescuers were searching for a woman who disappeared.

State Police Trooper Stephen Limani/Pennsylvania State Police via AP

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State Police Trooper Stephen Limani/Pennsylvania State Police via AP

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The manhole-sized opening had not been seen by hunters and restaurant workers who were in the area in the hours before Pollard’s disappearance, leading rescuers to speculate the sinkhole was new.

Authorities used an excavator to dig in the area, where temperatures dropped to below freezing overnight.

“We are pretty confident we are in the right place. We’re hoping there is still a void she could be in,” Pleasant Valley Volunteer Fire Company Chief John Bacha told Triblive.

By late afternoon, searchers were using access to a mine to try to find her and had dug a separate entrance out of concern that the ground around the sinkhole opening was not stable. Authorities vowed to keep searching for Pollard until she is found.

Pollard lives in a small neighborhood across the street from where her car and granddaughter were located, Limani said.

The young girl “nodded off in the car and woke up. Grandma never came back,” Limani said. The child stayed in the car until two troopers rescued her. It’s not clear what happened to Pepper.

Police said sinkholes are not uncommon because of subsidence from coal mining activity in the area.

A team from the Pennsylvania Department of Environmental Protection, which responded to the scene, concluded the underground void is likely the result of work in the Marguerite Mine, last operated by the H.C. Frick Coke Company in 1952. The Pittsburgh coal seam is about 20 feet (6 meters) below the surface in that area.

Department of Environmental Protection spokesperson Neil Shader said the state’s Bureau of Abandoned Mine Reclamation will examine the scene after the search is over to see if the sinkhole was indeed caused by mine subsidence.

The disappearance of a 64-year-old Pennsylvania woman is being investigated by state authorities, who said on Tuesday they fear she may have fallen into a sinkhole.

What Happened?

Elizabeth Pollard went missing on Monday evening after heading out to find her missing cat, Pepper, in the village of Marguerite, located about 40 miles east of Pittsburgh. The family of Pollard then called police at about 1 a.m. local time on Tuesday to say she had not been seen going out.

Pennsylvania State Police soon discovered her vehicle parked near Union Restaurant with her 5-year-old granddaughter inside, unharmed but alone.

According to trooper Steve Limani, Pollard lives in a small neighborhood across the street from where her car and granddaughter were located.

However, a sinkhole had recently opened up as emergency crews worked through the frigid night, using advanced equipment to probe the manhole-sized sinkhole.

A pole camera outfitted with a sensitive listening device revealed no signs of life, though a second inspection hinted at the presence of what may be a shoe about 30 feet below the surface.

Authorities suspect the sinkhole, likely caused by subsidence from historic coal mining in the region, opened suddenly beneath Pollard as the opening had not been seen by hunters and restaurant workers who were in the area in the hours before Pollard’s disappearance.

“It almost feels like it opened up with her standing on top of it,” Limani said.

Rescue efforts have since been intensified, with heavy machinery brought in to excavate the area.

“We’re pretty confident we are in the right place,” John Bacha, chief of the Pleasant Valley Volunteer Fire Company told Triblive. “We’re hoping there is still a void she could be in.”

How Did the Sinkhole Appear?

The sinkhole is believed to be linked to the long-abandoned Marguerite Mine, which operated until 1952 by the H.C. Frick Coke Company, according to the state’s Department of Environmental Protection. The Pittsburgh coal seam is about 20 feet below the surface in that area.

Police said sinkholes are not uncommon because of subsidence from coal mining activity in the area.

However, this incident highlights the lingering dangers of Pennsylvania’s coal mining legacy, with the state’s Department of Environmental Protection on-site to assess the area.

After the search concludes, experts from the Bureau of Abandoned Mine Reclamation will determine if mine subsidence definitively caused the sinkhole, Department of Environmental Protection spokesperson Neil Shader said.

This article includes reporting from The Associated Press.